Hi people, I`m back.
Today I want to talk about how life and the climate on our planet is gonna be a billion years from now. The timeline says that by then Sun`s luminosity will have increased by 10%. This don`t seen too much and it also says that Earth will then become too hot to support life and liquid water. But I think this prediction is very pessimistic because:
- I don`t believe that the entire planet will become devoid of life. What about the poles, the Greenland, Siberia and Antarctica? I think these cold places will actually have more lifeforms than the Amazon rainforest nowadays;
- If the Sun will become brighter, more energy Earth will receive and therefore more energy will be available for photosynthesis and more energy will become available for life to grow and develop;
- A billion years is a very, very long time. I think at least life on the oceans will have enought time to adapat to such changes to such an extant that animals and plants will look alien compared to today.
Earth is becoming too hot to support liquid water
The Sun's luminosity has increased by 10%, causing Earth's surface temperatures to reach an average of 47°C (116°F).* As the seas and oceans begin to evaporate, the atmosphere is becoming laden with water vapour, creating an intense greenhouse effect. Mars is actually becoming more habitable during this time.*
It says that the average Earth surface temperature will be around 47 degrees centigrades. This is very hot, hotter than summertime here in Rio de Janeiro. However I think the poles could still be as warm as Europe or the mediterranean is nowadays.
It also seens that Earth will become much cloudier due to the enormous amount of water vapour in the atmosphere caused by the greenhouse efffect. Don`t you think that this could actually make Earth cooler further into the more distant future?