Welcome to DU! The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards. Join the community: Create a free account Support DU (and get rid of ads!): Become a Star Member Latest Breaking News Editorials & Other Articles General Discussion The DU Lounge All Forums Issue Forums Culture Forums Alliance Forums Region Forums Support Forums Help & Search

Science

(20,286 posts)

6. CO2 was around 400-450 ppm then

Wed Dec 7, 2022, 03:50 PM

Dec 2022

We're at 420ppm and rising fast, around 2-3ppm per year.

We'll be over 500 ppm by 2060.

Edit history

Please sign in to view edit histories.

0 members have recommended this reply (displayed in chronological order):

6 replies

= new reply since forum marked as read

Highlight:

Scientists Discover Oldest DNA Ever, Revealing 2 Million-Year-Old Lost World [View all] Jilly_in_VA Dec 2022 OP

Wow. 2naSalit Dec 2022 #1

I second your Wow! SheltieLover Dec 2022 #2

Excellent! Faux pas Dec 2022 #3

LOL, Just think, USA could have owned and/or traded properties for Greenland Backseat Driver Dec 2022 #4

Clones? - Wouldn't it be something to see them packman Dec 2022 #5

CO2 was around 400-450 ppm then NickB79 Dec 2022 #6