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...migrated overland on to what is now Madagascar; you can check from Figure 2 that lemurs originated at a much later date, when Madagascar was an island. And yet nearly all expert opinion claims that the ancestors of lemurs originated from Africa, rather than, say, what is now India, from which Madagascar finally severed its connection more recently - about 88 million years...

...migrate from the Northern hemisphere to the Southern to spend the winter months in warmer waters. Around Panama and Costa Rica, the migration route crosses some of the busiest shipping lanes in the world. Dr Hector Guzman from the Smithsonian Tropical Research Institute in Panama City has been tagging humpback whales with transmitters that can be monitored by satellite....

...migration of PBDEs into humans and shellfish can be explained by proximity to where they were used. While it is relatively simple to see how PBDEs can get into subjects close to their source, the PBDEs that end up in some of the wildlife in the Arctic have to be physically transported there. You will look at how pollutants are transported to the Arctic by flows around the...