In this March 19, 2013, file photo, a trickle of water left in the Rio Grande is pushed downstream by the wind near the chile growing community of Hatch, N.M. In southern New Mexico, the mighty Rio Grande has gone dry, and farmers are worried about dwindling water supplies as the state enters its third straight year of drought. Top climate scientists are gathering in Japan this week to finish up a report on the impact of global warming. And they say if you think climate change is only faced by some far-off polar bear decades from now, well, you’re mistaken. They say the dangers of a warming Earth are immediate and human. While it doesn’t say these events were caused by climate change, the report mentions droughts in northern Mexico and south-central United States, as showing how vulnerable people are to these weather extremes.