The Sea Wasp (Ryk E. Spoor)

Bear in mind that if your next step is to claim that because others planets are warming, any warming on Earth must be due to the sun, the likely response is likely to point out that not all of the other worlds are warming, that in at least some of the cases where a planet is warming, we know why and it's not due to the sun getting a bit brighter, and that we measure how bright the sun is so if it was getting brighter, we'd know.