Yes, CO2 can have benefits… http://www.sciencedaily.com/videos/2007/0603-can_carbon_dioxide_be_a_good_thing.htm  But too much of anything is poisonous.  For example, “The downside is that an excess of CO2 in ocean waters increases acidification and can kill marine organisms.”  So there you go: do your research before you embarrass yourself on the entire internet with an ignorant protest sign.
(via Scientific Link Between Skepticism and Inaction Revealed: Or, Why Koch & Exxon Spread Climate Lies)

Yes, CO2 can have benefits… http://www.sciencedaily.com/videos/2007/0603-can_carbon_dioxide_be_a_good_thing.htm  But too much of anything is poisonous.  For example, “The downside is that an excess of CO2 in ocean waters increases acidification and can kill marine organisms.”  So there you go: do your research before you embarrass yourself on the entire internet with an ignorant protest sign.

(via Scientific Link Between Skepticism and Inaction Revealed: Or, Why Koch & Exxon Spread Climate Lies)

Like coffee and chocolate, beer is one of the common pleasures of life being damaged now by global warming. Good beer depends on water, barley, and hops — all of which are being disrupted by greenhouse pollution from burning fossil fuels.

Now.  Not in 50 years, or 15.  Now.

I’m so tired of living in a world where people pay more attention to their invisible friends than to basic overwhelming scientific evidence.

Confidence Level & Projection (Worldwide through 2100)

"Virtually certain" globally; "very likely" over land - Extreme temperatures: Increasingly frequent and intense heat waves and record warmth; decreases in extreme cold.

"Very likely" - Coastal flooding: Rises in the average sea level will contribute to more frequent bouts of "extreme high coastal water levels."

"Likely" - Heavy precipitation: Frequency of heavy precipitation or the percentage of total rainfall coming from heavy rainfall will increase in many areas.

"Likely" - Stronger tropical cyclones (hurricanes, tropical storms, typhoons, etc.): Average maximum wind speed will increase, but the number of tropical cyclones will decrease or remain unchanged.

"High confidence" - Mountain weather: Heat waves, glacial retreat, and reduced permafrost will affect high mountain terrain, including landslides and floods from glacial lakes.

"Medium confidence" - Drought: More intense droughts in parts of Europe, the central U.S. through Mexico and Central America; northeast Brazil; and South Africa. Other areas are "low confidence."

"Low confidence" - Severe thunderstorms: Tornadoes and hail are too small-scale and involve too many complexities for climate models to forecast confidently.

"Low confidence" - River flooding: Limited evidence and local complexities prevent a confident forecast of changes in flooding.

"Low confidence" - The various climate models do not agree about future changes in large-scale patterns such as El Nino or monsoon seasons.