1. All life on Earth, including human life, has a much better chance of surviving a billion years into the future if we make it interplanetary -- billionS of ye

1. All life on Earth, including human life, has a much better chance of surviving a billion years into the future if we make it interplanetary -- billionS of years into the future if we make it interstellar. 2. Nuclear is the only obvious alternative to fossil fuels. 3. ¿¿¿ 4. There's no reason to believe handling climate change is hopeless, and there's reason to believe it's hopeful. The biosphere's natural lifespan[0] not so much. 0: https://en.wikipedia.org/wiki/Timeline_of_the_far_future https://en.wikipedia.org/wiki/Timeline_of_the_far_future "500–600 million -- By this time, carbon dioxide levels will fall to the point at which C3 photosynthesis is no longer possible. All plants that utilize C3 photosynthesis (≈99 percent of present-day species) will die.[76] The extinction of C3 plant life is likely to be a long-term decline rather than a sharp drop. It is likely that plant groups will die one by one well before the critical carbon dioxide level is reached. The first plants to disappear will be C3 herbaceous plants, followed by deciduous forests, evergreen broad-leaf forests and finally evergreen conifers.[69]"