What if, his team pondered, there was some way to get a look inside the egg sac to see how a baby shark develops? Enter: the ...

Sharks play a critical role in maintaining balance throughout marine ecosystems. Scientists have found that their presence regulates prey populations and protects vulnerable habitats. When shark ...

一项发布在《内科学年鉴》（Annals of Internal Medicine）上的新研究发现，每天一次长距离步行比多次短距离步行更有利于心脏健康，特别是对锻炼量较少的人来说。 The study looked at more than 33,000 adults aged 40 to 79 in the UK who walked fewer than 8,000 steps a day.

Ghost sharks inhabit some of the darkest and least explored regions of the deep sea. Researchers have captured rare footage ...