大象传媒

More than one third of the world's amphibian species are endangered, finds new report. Plus, problems in Spain with reintroduced toads spreading the deadly chytrid fungus which is causing this mass extinction.
A new way of making induced pluripotent stem cells (IPSs) by reprogramming adult cells uses an adenovirus that does not permanently integrate into the chromosomes, could bring human therapy even closer. The oldest rocks on Earth could be the 4.3 billion-year-old ones found in northern Canada. Noise pollution in the Artctic could affect polar bears. Why the Large Hadron Collider had to be shut down this week.