The Earth might be crawling with undiscovered alien creatures whose biochemistry is very different from life as we know it. An astrobiologist explains.

According to the UK’s Met Office, each decade from the 1980s has been successively warmer than all the decades that came before. 2019 concludes the warmest ‘cardinal’ decade (those spanning years ending 0-9) in records that stretch back to the mid-19th century.

NOAA reports that 2019 was the 5th consecutive year in which the United States experienced 10 or more $1 billion weather and climate disasters, including fires, hurricanes and flooding.