Reuters Blogs

Environment Forum

Global environmental challenges

June 24th, 2009

On the origin of the Darwin myths

Posted by: Gillian Murdoch

Ever been told by a ruthless boss that, “as Charles Darwin said, it’s survival of the fittest”?

Rather than answering that it was actually a one-time sub editor for The Economist magazine, Herbert Spencer, who coined the phrase, or fighting back with an equally wrong comment about someone being descended from monkeys, Darwin academics are calling for a moratorium on the everyday use and abuse of the great naturalist.

Two-hundred years after he was born, and 150 years after he published “On the Origin of Species”, it’s time to check the facts, as “most of what most people think they know about him is not true,” according to Darwin scholar John van Wyhe, a historian of science at the University of Cambridge.

Visiting Singapore for a Willi Hennig Society-organised talk about Darwin and his contemporary Alfred Russel Wallace, who is also the subject of several myths, van Whye ran through a series of widely-believed Darwin misconceptions that make humankind look pretty slow on the uptake.

First off, he the pointed out that Darwin and Wallace, were not, really, such iconoclasts.

By the late 1830s, two decades before Darwin’s Origin, the scientific community had already accepted that the world was far older than could be allowed by a literal reading of Genesis, he said.

The “Bridgewater Treatise” by the Reverend William Buckland, the first person to scientifically describe a dinosaur, detailed geology and mineralogy’s relevance to theology by drawing cross-sections of the earth full of the fossils of extinct creatures, decades before the two came on the scene.

Second, Darwin did not hold off publishing his theory for decades out of a paralysing fear of outraging his wife or conservative Victorian society, as the popular “Darwin’s delay” theory has it.

The more than 20 year gap between his return from the Voyage of the Beagle and publishing his theory of natural selection is better explained by the fact that he was simply “really busy”, according to Wyhe.

After completing several volumes of Beagle findings, he spent so many — eight — years writing about barnacles that, by the end, he wrote that “I hate a barnacle as no man ever did before”.

The next myth concerns the 1858 letter and paper, from his now comparatively little-known contemporary Wallace, that jolted both into publishing action, and has been cited as evidence that Darwin stole Wallace’s ideas.

Wallace’s years of specimen collecting in Indonesia, Malaysia, Singapore and New Guinea led him to independently articulate a theory of evolution that, Darwin acknowledged in a June 1858 letter, was the most “striking coincidence” he had ever seen.

But rather than Darwin performing a nefarious, unattributed, Victorian equivalent of a cut and paste job from Wallace’s work, and racing to scoop the glory for himself, the two published a joint paper in 1858.

Wallace was himself delayed in writing up his findings into a book by six years, as he sorted through packing cases crammed with the more than 120,000 beetles, butterflies, reptiles and mammals he had collected, while in what he describes in his book introduction as a “weakened state”.
Ever generous in his praise of Darwin, he dedicated his 1869 book The Malay Archipelago to him.  

Anyone still not convinced doesn’t have to take my word for it.

Facts can be checked at Darwin Online, a complete archive of his works created by van Wyhe.

(Pictures - top Charles Darwin. Right: Darwin’s house, Down House in Kent, southern England, where he wrote “On the Origin of the Species” REUTERS/Tal Cohen)

* This article was modified on 29 June 2009. The original referred to Wallace as having travelled to Papua New Guinea. This has been corrected.

February 12th, 2009

On Darwin anniversary: tourist limits to Galapagos, Antarctica?

Posted by: Alister Doyle

Should the world celebrate the 200th anniversary today of the birth of English naturalist Charles Darwin by working to limit the number of tourists visiting the Galapagos Islands or Antarctica to protect their spectacular wildlife?

Would that help elephant seals like this one above on the Antarctic Peninsula slumber more peacefully? And would it cause less disruption for marine iguanas, below right, on Santa Cruz island in the Galapagos?

The Galapagos in the Pacific Ocean gave Darwin insights into evolution on his famed voyage around the world aboard The Beagle. Many species — from mockingbirds to tortoises – differ from those on the South American mainland. For a story, click here.

And Antarctica, which wasn’t even discovered when Darwin was born on Feb. 12, 1809, is the world’s last big wilderness.

About 39,000 tourists are likely to visit Antarctica this current summer season, down from a record 46,000 a year ago and interrupting a fast-rising trend in the past couple of decades, according to the International Association of Antarctica Tour Operators. For a story, click here. Recession has hit bookings of trips that cost thousands of dollars.

IAATO says the numbers are tiny — enough people to fill a football stadium across a continent bigger than the United States.

But a group of environmentalists, the Antarctic and Southern Ocean Coalition, wants the numbers capped — it hasn’t proposed an exact figure, but says it shouldn’t be too far above current levels.

Among nightmare scenarios for Antarctica, first sighted in 1820, penguins might get bird flu. Or new seeds unwittingly brought by tourists might thrive and displace lichens and mosses found nowhere else on earth. A big cruise liner might run aground, spilling oil and coating beaches used by seals.

And the unique wildlife is of the Galapagos is similarly under threat from people with both tourism and immigration from the South American mainland. See a BBC report here, for instance, saying that tourism rose to more than 173,000 last year.

The United Nations in 2007 added the Galapagos to its list of world heritage sites in danger.

So should there be caps on visitors? If so, how many?

If not, how do we protect these unique places?

April 11th, 2008

Magical Madagascar worth saving

Posted by: Ed Stoddard

A Black and White Ruffed Lemur clings to a branch at the Monkeyland Primate Sanctuary near Pletteberg Bay on South Africa’s scenic Garden Route September 30, 2007. Common to Madagascar, the Black and White Ruffed Lemur is currently classified as Endangered by the World Conservation Union. World Animal Day is commemorated on October 4. REUTERS/Mike Hutchings (SOUTH AFRICA)Scientists have joined forces to save magical Madagascar by using a new method they hope to apply to other hot spots of biodiversity. For full details you can check my colleague Deborah Zabarenko’s story.

As someone who has had the great privilege of visiting this island continent twice I can only say: “Right on!”

Madagascar is a classic example of natural selection at work: most of its species have evolved in splendid isolation because the island broke free from the rest of Africa tens of millions of years ago. 

This is what evolution and natural selection are all about. It is no coincidence that Charles Darwin and Alfred Russel Wallace separately stumbled upon this profound notion in the 19th century while observing life on islands — or, more specifically, the difference to be found in life on islands often only a few miles apart. 

Madagascar, because of its size and the length of time it has been a cast away, is a prime an example of natural selection run riot. A Coquerel’s Sifaka lemur leaps between trees inside the Lemurs Park, a private eco-tourism enterprise which hosts 9 of 49 known lemur species, 22 km (14 miles) from Antananarivo December 5, 2006. The lemurs, which are found only on Madagascar, are an endangered species due mainly to deforestation and hunting in the Indian Ocean island. REUTERS/Radu Sigheti (MADAGASCAR)

Its snakes have no venom because that is an evolutionary trait they picked up after Madagascar and the rest of Africa went their separate ways.

It has boa constrictors (which I have observed in its forests) which are found nowhere in Africa but are found in South America. Why? How? Because, or so goes one theory I have heard, Madagascar and South America BOTH broke free from Africa at one point. So it stands to reason that they might both keep something that died out in Africa and vice versa.

That is the dynamic of natural selection.

I could go on and on and on. Madagascar is most famous for its roughly 70 species on lemurs, dainty primates that come in all shapes and colors. The largest among them, the indri, has a haunting cry that belies its small stature and which sent tingles down my spine the first time I heard it.

Much of the indri population is now restricted to a fragment of isolated habitat in a protected reserve. An island on an island.

For a good popular introduction to the study of island life I would recommend David Quammen’s superb book “The Song of the Dodo.” It inspired me to go to Madagascar in the first place with my wife when I was a Johannesburg-based correspondent.

And if you really want to see natural selection at work on an island, go to Madagascar yourself. Eco-tourism can help preserve species by giving rural people an economic incentive not to hunt them or destroy their habitat.  And that can only help the scientists and their new efforts to save this cradle of weird and wonderful evolution.

April 3rd, 2008

Galapagos bird brains survive wind turbines

Posted by: Alister Doyle

Galapagos wind turbine — courtesy E8 group of power generatorsThree giant wind turbines are helping the Galapagos Islands in the Pacific Ocean towards a goal of eliminating use of fossil fuels by 2015 — and no birds have been killed in a six-month pilot scheme despite worries in many nations that big blades and bird brains don’t mix.

The Galapagos are home to mocking birds, finches, petrels, blue-footed boobies, doves, albatrosses and other exotic species many of which only live on the islands. Studies of Galapagos birds helped British 19th century naturalist Charles Darwin work out his theory of evolution.

“In six months of pilot operations there have been no bird kills,” said Melinda Kimble of the U.N. Foundation, a sponsor of the $10.8 million project led by power producers including American Electric Power and also backed by Ecuador’s government.

Power producers studied birds’ flight paths and nesting habits to decide the siting of the turbines and reduce risks of collisions.

“There seems a very broad support for the project, right down to school kids,” said Kimble after attending an official dedication ceremony late last month on San Cristobal, the island with the biggest human population.

A pelican not affected by the oil spill stands on a rock as the Ecuador-registered ship “Jessica” remains aground off San Cristobal in the Galapagos Island chain, January 25, 2001. Nine days after the ship ran aground and spilled most of its cargo of diesel and bunker fuel, the spill continues to threaten animal species native only to the archipelago. GG/HBThe turbines have a generating capacity of 800 Kwh and will provide up to about 80 percent of San Cristobal’s electricity needs in windy months, halving the need for diesel fuel to power the island. The ship “Jessica,” carrying 160,000 gallons (606,000 liters) of diesel fuel and about 80,000 gallons (300,000 liters) gallons of other liquids, is seen January 21, 2001. A boat carrying fuel to Ecuador’s Galapagos Islands that ran aground four days ago is leaking oil into the ecologically sensitive waters near the famous islands, the government said Saturday. The spill has already affected animals including sea lions and pelicans and volunteers are on standby to clean up and rescue them, an ecologist said. GG

The shift to renewable energy for the islands was spurred after the oil tanker Jessica ran aground with 160,000 gallons of diesel fuel in 2001 — some oil leaked but a catastrophe was narrowly averted thanks to favourable winds and tides.

Bird lovers say that turbines from California to Denmark often kill birds.

But are the turbines a threat — or is it just a case of siting them with care?