The appearance of large ice rings on Lake Baikal in southern Siberia has confounded scientists since they were first discovered in the early 2000s. Recent investigations into the ice rings have resulted in a plausible explanation, but there’s still much to learn about these unusual features.
Three months ago, Iran’s Lake Urmia was green. Today, it’s blood red. But it’s not something that’s been added to the lake that caused the change — it’s something that’s been taken out.
Canada’s tar sands are an unequivocal environmental nightmare, ravaging the landscape and spewing billions of gallons of toxic water into the world. Now, oil companies are claiming they’ve figured out what to do with all that poisonous water: Turn Alberta into one giant man-made lake district.