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: 
1. http://ClimateCurious.com
2. http://prageru.com/playlists/what-science-reveals-about-climate-change

In-depth, balanced debate, between leading experts on both sides: 
3. http://thebestschools.org/special/karoly-happer-dialogue-global-warming

Amicus brief in Calif v. BP lawsuit, by 3 top scientists: 
4. http://co2coalition.org/wp-content/uploads/2018/03/Happer-Koonin-Lindzen.pdf

In-depth physics colloquium: 
5. https://sealevel.info/Happer_UNC_2014-09-08/

Hurricanes & tropical cyclones (graphs): 
6. http://policlimate.com/tropical/frequency_12months.png
    http://policlimate.com/tropical/global_running_ace.png
    https://www.wunderground.com/hurricane/accumulated_cyclone_energy.asp?basin=gl&MR=1

Tornadoes (graph): 
7. https://www1.ncdc.noaa.gov/pub/data/cmb/images/tornado/clim/EF3-EF5.png

Sea-level (shameless self-promotion of my own web site): 
8. http://sealevel.info
9. http://sealevel.info/MSL_global_thumbnails5.html
10. http://sealevel.info/acceleration_primer.html ("acceleration primer")

Benefits of CO2… 
…for agriculture:
11. http://sealevel.info/1920sciamCO2
12. http://co2coalition.org/
13. http://co2science.org/data/plant_growth/plantgrowth.php
…and for deserts & natural ecosystems:
14. http://sealevel.info/greening_earth_spatial_patterns_Myneni.html

Top climate blog (news and discussion): 
15. http://wattsupwiththat.com

16. 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."