D Poulton wrote about planet venus in your issue dated 1 November. It is not producing heat that puts all life on earth in danger but producing greenhouses gases in the process of keeping ourselves warm and travelling, frequently, far and fast. It is our prodigious burning of fossil fuels that puts us in danger. All fossil fuels give off carbon dioxide that enhances the earth's natural protective greenhouse effect and is endangering all life on earth. Venus is hotter than mars, even though it is nearly twice mercury's distance from the sun, because of its strong greenhouse effect. Exactly what we humans are doing to planet earth; foolishly giving ourselves a runaway greenhouse effect and passing all tipping points! Hence, the urgency of going low carbon in our life styles and, living sustainably. But we are nowhere near doing that.
Tim Weller
SOURCE is Wikipedia:
"The CO2-rich atmosphere generates the strongest greenhouse effect in the Solar System, creating surface temperatures of at least 735 K (462 °C; 864 °F).[12][58] This makes Venus's surface hotter than Mercury's, which has a minimum surface temperature of 53 K (−220 °C; −364 °F) and maximum surface temperature of 700 K (427 °C; 801 °F),[59][60] even though Venus is nearly twice Mercury's distance from the Sun and thus receives only 25% of Mercury's solar irradiance." Wikipedia
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