Nature

Dire wolves became extinct over 10,000 years ago. Scientists believe this was the result of climate change and the loss of their main food source.

Millions are clicking to save fish trapped by a centuries-old dam — here is why people are keeping an eye on the fish doorbell in Utrecht.

Koalas are facing a shocking health crisis: widespread chlamydia infections — so are they born with the STD and how do they get it.