Crocodile made herself pregnant – a first for her species
What is the Air Quality Index?
Haze could hang around Northeast and beyond for days, experts warn
What's behind the Canadian wildfires blanketing the East Coast in smoke?
When will the wildfire smoke clear? Here's what meteorologists say
This orange lobster is a one in 30 million find, experts say
Scientists claim evidence that our distant relatives buried their dead
Sailing race takes competitors around the world while collecting climate data
