12-05-27 When leatherback（棱皮龟） turtle hatchlings dig out of their nests buried in the sandy Playa Grande beach in northwest Costa Rica, they enter a world filled with dangers. This critically endangered species faces threats that include egg poaching an...

11-06-24 Ground-nesting birds face an uphill（向上的） struggle to successfully rear their young, many eggs and fledglings（刚会飞的幼鸟） falling prey to predators. Now, scientists from the USA have found that some birds eavesdrop（窃听） on their enemies,...