The benefits of higher CO2 levels for crops have been known for a century; this photo contrasting large potatoes grown with extra CO2 to small potatoes grown without it from a 1920 Scientific American article.

If you'd like to learn more about climate change, here are some trustworthy resources

Introductions:  introductions

1. “Climate Curious,” by environmentalist David Siegel: What he learned about climate change.

2. PragerU: What Science Reveals About Climate Change (videos).

Debates:  debates

3. BestSchools: Karoly/Tamblyn—Happer Dialogue on Global Warming, 2016-2017. An in-depth, balanced, written debate, between leading experts on both sides of the issue.

4. IQ2US Debate: Is Global Warming A Crisis? (video). A 2007 televised debate between three top climate experts on each side, which is still surprisingly timely. 

Amicus brief:  amicus brief

5. Three top scientists briefed the judge on climate science, in the 2018 Calif v. BP lawsuit. It was educational for him, and it probably will be for you, too.

Physics:  physics

6. 2014 UNC Physics Colloquium by Princeton atmospheric physicist Prof. Will Happer.

7. Wilson, 2012, Simple model to estimate the contribution of atmospheric CO2 to the Earth's greenhouse effect.

8. Pierrehumbert, 2011, Infrared radiation and planetary temperature (and discussion).

Sea-level rise is not accelerating:  Honolulu sea-level vs. CO2

9. (shameless promotion of my own web site -DAB).

10. Clickable thumbnails for NOAA's entire 2016 list of 375 long term trend tide stations.

11. “Acceleration” primer. (Do you know how to recognize “acceleration” in a graph?)

Hurricanes & tropical cyclones are not worsening hurricane frequency

12. Lin & Chan (2015), Recent decrease in typhoon destructive potential and global warming implications. Nature Communications, doi:10.1038/ncomms8182.

13. Global Hurricane Frequency graph (twelve month running sums).

14. Global Tropical Cyclone Accumulated Cyclone Energy graph (ACE) (or similar graph from

Tornadoes are not worsening:  tornadoes

15. 2018 US tornadoes lowest in 65 years of record-keeping, by meteorologist Anthony Watts.

16. NOAA: U.S. Annual Count of Strong to Violent Tornadoes (F3+), 1954 through 2014 (graph).

17. WoodTV: Strong to Violent Tornadoes in the U.S. Trending Downward, by meteorologist Bill Steffen (graph).

Droughts are not worsening:  droughts

18. Global integrated drought monitoring and prediction system.

What about feedbacks?  droughts

19. Learn about “climate feedbacks.” Dozens of “feedback mechanisms” affect the Earth's climate. Some are “positive” (amplifying), others are “negative” (attenuating). This is my web page on the topic. -DAB

Benefits of rising CO2 levels…  Greening Earth: spatial patterns

…for deserts & natural ecosystems:
20. “Greening” the Earth.

…and for agriculture:
21. Carbonic Acid Gas to Fertilize the Air, Scientific American, Nov. 27, 1920.
Greening Earth: spatial patterns
22. The Center for the Study of Carbon Dioxide and Global Change (“CO2 Science”) is a 501(c)(3) educational charity, dedicated to factual climate science. They maintain a huge and extremely useful plant growth database, which catalogs scientific studies of the effects of varying CO2 levels on hundreds of plants.

22. The CO2 Coalition is another 501(c)(3) educational charity, with a powerhouse board of scientific experts, dedicated to promoting scientific accuracy about the effects of CO2 emissions. (Note: I am a member. -DAB)

24. Higher CO2 level is one of the reasons famines are becoming increasingly rare, for the first time in human history.

25. Arrhenius One of the fathers of modern climatology was the great Swedish scientist, Svante Arrhenius. He was the first person to quantify the warming effect of mankind's CO2 emissions, and correctly predict that it would benefit agriculture. He even predicted what is now called “polar amplification.” In a 1908 book he wrote, "By the influence of the increasing percentage of carbonic acid in the atmosphere, we may hope to enjoy ages with… better climates,… when the earth will bring forth much more abundant crops than at present, for the benefit of rapidly propagating mankind." 

The Top climate blogs:   WUWT

…For news, analysis & discussion:
26. Watts Up With That (“WUWT”), by Anthony Watts.

…For in-depth analysis: (realist/lukewarmist)
27. Climate et cetera by Judith Curry.
28. Climate Audit, by Steve McIntyre.

…and, for balance, the three best alarmist blogs:
29. Moyhu, by Nick Stokes.
30. Science of Doom, by Steve Carson.
31. All Models Are Wrong (but some are useful), by Tamsin Edwards.

32. I also maintain a long list of climate blogs and other useful sites, here:

Note: blogs which are censored to suppress dissent are not listed. That unfortunately includes several prominent ones.