Diving for Cures

  • Researchers are hoping to find cures underwater in corals and sponges. (Photo courtesy of NOAA)

Making medicine from things
found in nature isn’t a new
idea. Think, aspirin – which
originally came from the bark
of willow trees. Now drugs
derived from ocean animals are
slowly making their way onto
shelves. Samara Freemark talks to a researcher
who helps get them there:

Transcript

Making medicine from things
found in nature isn’t a new
idea. Think, aspirin – which
originally came from the bark
of willow trees. Now drugs
derived from ocean animals are
slowly making their way onto
shelves. Samara Freemark talks to a researcher
who helps get them there:

Mark Slattery is trying to find a cure for cancer. Slattery is a pharmacology professor at the University of Mississippi. But he doesn’t really spend much time in the lab. Instead, he’s usually in a wetsuit, scuba diving off the coasts of places like Guam and Antarctica.

He’s taking samples from tens of thousands of corals and sponges. He’s looking for that one special species that might make a chemical that could cure disease. He calls it, ‘diving for cures.’

“In many ways, it’s like going out and playing your super lotto or whatever. You pick your eight numbers and you see if you hit or not.”

The idea is pretty simple. A third of the medicines on shelves today were derived from plants and animals that live on land. So ocean researchers got to thinking that the organisms they studied probably also produced a lot of useful chemicals.

Take corals and sponges. They can’t run away from predators, so instead they squirt out chemicals that poison the fish that try to take a bite out of them. Marc Slattery says those toxins are bad for the fish – but they could be good for people.

“Those particular compounds that tell a fish “not today” are the same ones that might tell the AIDS virus “you can’t replicate” or tell a cancer cell “you’re dead” or those kinds of things.”

So Slattery and other researchers like him clip off bits of sponges and corals. When they get back to the lab they extract the chemicals, which is a nice way of saying…

“Stick it in a blender with methanol and ethyl acetate and hexanes and all those sorts of things you used in organic chemistry lab, and you throw away the dead sponge, and the tarry residue that’s left is sort of the biochemistry that came out of that sponge.”

“So you make a sponge smoothie?”

“Exactly.”

Once they’ve extracted the chemicals, researchers test to see if they have any human application. If a compound looks promising, it moves on to clinical trials. Those trials can take decades, which is why ocean-derived drugs are only now starting to hit the market. So far only two have been approved for use in the United States: a painkiller, and a cancer drug marketed by Johnson and Johnson.

I wondered how ocean conservationists felt about diving for cures. So I called up Sandra Brooke. She studies corals at the Marine Conservation Biology Institute. Brooke says she does worry that diving for cures could lead to over-harvesting.

“Once something becomes valuable to people, there’s a resistance to closing access to it. It becomes harder to regulate it.”

But she says corals are under much greater and much more immediate threats. The biggest culprit is industrial trawling. That’s when fisherman scrape reefs off the ocean floor so they can get to the fish.

“It’s just like the clear cutting of the forest, but on a much vaster scale. They are deliberately mowing down these deepwater coral ecosystems that are thousands and thousands of years old – some of the oldest animals ever measured. And that’s not going to come back – not in our lifetimes, not in many lifetimes.”

There’s also the fact that oceans are changing as the climate does. Those changes mean corals are becoming weaker. Marc Slattery thinks he might be seeing that in a Pacific reef he’s been studying for fifteen years.

“When we went back and started looking at it, we noticed that there was a change in the chemistry through time. As things have heated up on the reefs, there’s a physiological effect that has cascaded down into their ability to produce the chemistry we’re used to seeing. Early on it was so apparent, it was always there, and now they seem to be able to produce less of it.”

That’s means that today the cure for cancer might be out there in some coral reef, but it could be gone tomorrow.

For The Environment Report, I’m Samara Freemark.

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Coral Conservation in the Caribbean

  • The island of Bonaire is somewhat of an anomaly in the Caribbean due to its remarkably preserved coral reefs (Photo by Ann Dornfeld)

Scientists say nearly half of the coral reefs in the US are in bad shape.
Many are dead. The situation is similar in much of the world. But not
everywhere, as Ann Dornfeld found on the Caribbean island of Bonaire:

Transcript

Scientists say nearly half of the coral reefs in the US are in bad shape.
Many are dead. The situation is similar in much of the world. But not
everywhere, as Ann Dornfeld found on the Caribbean island of Bonaire:

(sound of waves on shore)

Jerry Ligon was working as the on-board naturalist on a small Caribbean
cruise ship when he first saw Bonaire.

“And I saw how clear the water was. And I’d been able to compare, during
my stint on the cruise ship, other islands in the Caribbean, and I realized
how special Bonaire was. So that was at the end of my contract, so I
decided to stay here. And I’ve been here for 15 years!”

It’s wasn’t just the clarity of Bonaire’s water that made Ligon stick around. It
was the remarkably healthy coral reefs that lay beneath the waves.

“I can even talk to divers who come to Bonaire and they say, ‘What
fantastic diving!’ and they remember, ‘This is how the way it was in Cayman
Islands 25 years ago!'”

Ligon says the Cayman Islands might have even had more impressive
reefs than Bonaire’s back in the day. But coral throughout the US and
Caribbean has been in sharp decline for decades.

So how do Bonaire’s reefs remain intact?

Ramón de León is the manager of the Bonaire National Marine Park. He
says the island has an advantage in that it has no industries to pollute the
water.

The island is mostly undeveloped, which means relatively little farm and
lawn fertilizer run-off that can create marine algae blooms. And cool
upwellings in the region help balance the rising ocean temperatures. Warm
oceans can cause coral bleaching, which often kills the coral animal.

But de León says Bonaire really owes its healthy reefs to its history of
conservation laws. They date back to an era when such policies were rare.

“Bonaire start to protect sea turtles and turtle nests in 1961, back when
everybody was promoting sea turtle soups and nailing shells in the walls.”

By the end of the 1970s, Bonaire had banned spear fishing and made it
illegal to damage coral. For years, divers have been required to pay a
sizeable fee and take an orientation course before they’re allowed to dive
on the island. That helps them avoid touching the coral, which can kill it.

De León says the island still allows too much fishing. So several years ago,
he told the island’s fishermen they needed to choose a no-take zone to let
the reefs recover.

“I refuse to decide myself. I give the fishermen some prerequisites that they
have to have to close, and they chose which area. Is not my number-one
option, but is their number-one option. So I have to respect that.”

De León says because the fishermen chose the no-take zone, something
important happened. Compliance is high.

For all of Bonaire’s success in coral conservation, there are still some
problems. De León says its reefs suffer from leaky septic tanks and boat
pollution. And there are few of the large predator fish that used to maintain
population balance on the reefs.

But the island is a haven for researchers like Mark Patterson. He designs
underwater robots at Virginia Institute of Marine Sciences.

Last year he led a NOAA expedition to use robots to map Bonaire’s reefs.
He says the island’s reefs are valuable as a baseline by which other reefs
can be judged.

“If you’re an up-and-coming marine scientist and you go to a lot of the coral
reefs on the planet now, you might think that all coral reefs have always
look like this. And they haven’t! So the fact that we’ve got some pristine
reefs left is very important, and we’ve got to work very hard to protect them
because it shows us how the ecosystem should look and used to look
around the planet before things started to go downhill.”

For The Environment Report, I’m Ann Dornfeld.

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Packrats Hooked on Freecycling

  • Aaron and Claire Liepman with an old faucet and garden owl they're hoping to give away on the Freecycle Network. Aaron Liepman moderates two freecycle groups in Michigan. (Photo by Rebecca Williams)

We all have things that we no longer use hidden in our closets, or stuffed away in the attic, or crammed into the garage. It’s not that we’ll ever use them, but we can’t bear to just throw them away. They’re still good. Now, a new service is matching up people who want to get rid of things with people who want those things. In part of an ongoing series called ‘Your Choice; Your Planet,’ the Great Lakes Radio Consortium’s Rebecca Williams explores freecycling:

Transcript

We all have things that we no longer use hidden in our closets, or stuffed away
in the attic, or crammed into the garage. It’s not that we’ll ever use them, but we
can’t bear to just throw them away. They’re still good. Now, a new service is
matching up people who want to get rid of things with people who want those
things. In part of an ongoing series called ‘Your Choice; Your Planet,’ the Great
Lakes Radio Consortium’s Rebecca Williams explores freecycling:


I’m a packrat. I just wanted to make that clear right from the beginning. If you’re honest with yourself, you’ll probably confess you’re a packrat too.


But even I know when there’s something taking up space in my house that HAS to go. In the back of my closet, there’s a large, heavy, men’s wetsuit.


You know, a SCUBA diving suit. A relative gave it to me when he moved away. Now, I’m not a diver. I’m not even really a snorkeler. But I’ve kept it for two years. You know, just in case.


I need a little help getting rid of things. So, when I heard about freecycling… I thought, “This is it. This will help me face my inner packrat.”


Freecycling uses email groups to connect people in their hometowns. It brings together one person with their broken telescope… and that one person who needs – or just wants it.


The only rule – everything has to be free. No money, no trading. And also, you meet the giver or taker in person.


It’s Deron Beal’s idea. He manages recycling crews for businesses in Tuscon, Arizona. One day a year ago, he found himself with a warehouse full of stuff.


“We had a lot of the businesses we recycle with
downtown giving us old desks or computers, saying, can you do something with this. I’ll be darned if we got so much stuff in, I figured, let’s open this up to the public and set up the freecycle network.”


Beal emailed some friends and nonprofits. At first, he says it was just he and his friends giving each other stuff. But in just a few months, freecycle turned into a verb. Beal set up a website, freecycle-dot-org. And put instructions up so people could start freecycling in their own cities. Now, more than 90-thousand people all around the world are doing it.


So… I went to see the freecycling guy in my area, Aaron Liepman. He moderates two freecycle groups. He makes sure everything stays free, and steps in if people start arguing. He also helps packrats like me freecycle.


(sound in, typing)


Aaron sets me up on his computer.


“So, let me sign out and you sign in. (clicking) So now you type in your subject, just like an email message.


RW: “Offer: wetsuit. What else?”


“Wetsuit, SCUBA wetsuit. (crinkles, zipper noise) Looks like it’s a size large, that’ll be useful information. It has a little hat to keep you warm in the water (laughs).”


(typing out)


We look over my post, and I click Send.


So, I’ve started cleaning out my closet. But I’m not totally converted to this freecycling idea. I mean, really, aren’t we just moving our stuff from one house to the next? That doesn’t really cut down on consumption, does it?


I turned to University of Michigan professor Raymond DeYoung. He studies people’s buying and recycling habits. He thinks freecycling probably won’t change our buying habits all that much.


“Because we’re never going to be able with freecycling to get the new, get the novel, get the big, because by definition it’s already been bought, it’s already old, it’s the smaller. So it can’t impact our entire consumption behavior.”


DeYoung says, for freecycling to really succeed, we’d have to stop getting bigger houses. And stop filling them up with more and more things. But it’s hard, even for people who want to try to get by with less stuff.


I guess a wetsuit is a good first step.


It’s been a couple days, and I’ve gotten four messages. The first came five hours after my posting. From Shawn… he wrote: “I’ll take the wetsuit.” But he didn’t sound that excited.


In freecycling, you can use “first come, first serve” to decide who gets your item. But you don’t always have to. And I kind of wanted my wetsuit to be appreciated… you know, actually get to see the water. So I waited a couple days. Then, I got Kelly’s message. She wrote: “WOW!” in all capital letters and said her son would love the wetsuit… for snorkeling.


So I emailed Kelly. And we set up a place to meet in downtown Ann Arbor.


(street sound up)


“Wetsuit!” (Oh, are you Kelly?) “yeah, I’m Kelly.. (Hi, I’m Rebecca. This is the wetsuit.) Great!”


Kelly’s been freecycling for a month. And she says she’s hooked.


And judging from the postings, a lot of people are. They seem to like getting other people’s beer can collections and turtle sandboxes.


But some on the list worry it’s getting to be too much of a good thing. People have started to ask for laptops, and houses… and a time machine, any condition.


“I think because it’s so new, some people are asking for funny things, like don’t we all want cash, and a Lamborghini (laughs). I just laugh at those and go on.”


Kelly says she thinks the network will probably get past that after awhile, leaving behind just the really devoted freecyclers.


For the Great Lakes Radio Consortium, I’m Rebecca Williams.

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