In breakthrough, pig kidney works in human body for a month
Identifying humpback whales online
Identifying individual humpback whales online
Scientists uncover 8,000-year-old village underwater, find "treasure trove"
Fossil from "tiny" whale, 41 million years old, discovered in Egypt
Most distant star ever recorded is a million times brighter than the sun
EU climate service data confirms July was hottest month ever recorded
Urgent effort underway to save coral reefs off Florida Keys
The science behind heat domes
Extreme heat, the most lethal climate disaster