Stop building a spaceship to mars and just plant some damn trees

        July 4, 2019 Mother Jones | Global | climate change: science

An IPCC study estimates 1 billion hectares of forest must be planted by 2050 to keep global temperatures from rising less than 1.5 °C over pre-industrial levels. There is about 850 gigatonnes of atmospheric carbon, 1 billion hectares stores 200 gigatonnes, cutting carbon by about 25%. The race is on since we emit about 10 gigatonnes/year from burning fossil fuels.