Jim Hansen
Jim Hansen
James Edward Hansenis an American adjunct professor in the Department of Earth and Environmental Sciences at Columbia University. He is best known for his research in climatology, his 1988 Congressional testimony on climate change that helped raise broad awareness of global warming, and his advocacy of action to avoid dangerous climate change. In recent years he has become a climate activist to mitigate the effects of climate change, on a few occasions leading to his arrest...
attention global received risks warming
The risks of global warming have not received the attention they deserve.
birds line
But that's an administrative boundary. The birds don't always know where that line is, and there's some crossover.
canada nest northern texas winter
We only see them during migration. They nest in northern Canada, but they winter in the panhandle of Texas and in New Mexico.