In April 1970, on the first Earth Day, the planet had warmed by about 0.06°C—today we're at 1.16°C
https://trib.al/7vPpx3v 

Scientists have measured the rising level of carbon dioxide in the atmosphere since the 1950s. The monthly CO2 level has risen by approximately 87 ppm since 1970—or about 27%
https://trib.al/rabfbun 

The ice caps are melting faster than scientists expected. We’ve been able to track this using data from the late 1970s.
As of Apr. 19, there was 13.66 million km2 of Arctic sea ice, or 5.5% lower than the historical average for the day
https://trib.al/6UUX3uV 

On the bright side, it’s easier than ever for the world to go green. Building new wind or solar capacity now costs less than adding the equivalent in coal or gas plants in two-thirds of the world
https://trib.al/EXmf1Ff 

Thirty years ago, more than half of all power generation came from coal and natural gas. Thirty years from now, about the same proportion will come from the sun and wind
https://trib.al/GYcBtRx 

The world is a far different place since it’s first Earth Day. A difficult global transition is happening right now, away from fossil fuels, deforestation, greenhouse-gas pollution and melting ice. We still have a long way to go
https://trib.al/EfyALbv