Carbon dioxide in our atmosphere reached it's annual peak in May, topping out at the highest level ever directly measured since modern observations began 63 years ago.
Carbon dioxide in our atmosphere reached it's annual peak in May, topping out at the highest level ever directly measured since modern observations began 63 years ago.
Sign up for our weekly newsletter and unlock one more article for free.
View our Privacy Policy
Want more?
Keep reading for as low as $1.99!
Already a subscriber?
Find my Subscription
Save up to 40% off the cover price when you subscribe to Discover magazine.