大象传媒

Another stem cell breakthrough as adult skin cells are transformed into embryonic stem cells in the laboratory by adding a mixture of four genes. Giant fossilised claw found in Germany that belonged to a marine-dwelling scorpion which, at 2.5 m long, is the biggst bug that's ever lived on Earth. Three years of talks in France have failed to agree on forming an international panel to protect biodiversity. The worrying instability of the Greenland ice cap. Plus, the consequences of the Black Sea flooding 8,000 years ago might indicate how society today might change with rising sea levels.