A newly-identified virus has sickened people in China after spilling over from animals.
An unexploded WWII-era bomb was discovered in Italy's River Po as extreme drought lowers water levels across Europe.
Is a low fat diet actually healthy? We weigh up the evidence for and against cutting down your fat intake
Almost all sea turtle hatchlings are emerging from their eggs as females on some Florida beaches. What's going on?
If you're in a random group of people, what are the chances that two of the people will have the same birthday?
The holes form a straight line and appear at regularly repeating distances, and they are surrounded by tiny mounds of sediment.
The number of people the planet can sustain depends on both the natural constraints of our environment and human choices.