Climate change from human causes is already having negative health effects on humans, according to to a report released by the U.S. Global Change Research Program.According to the Climate and Health Assessment report, human-induced climate change is endangering our health by affecting “our food and water sources, the air we breathe (and) the weather we experience.” The health risks only increase as the climate continues to change, the report said.In particular, air pollution is affecting children the most because they “breathe more air per pound than adults,” said Dr. Mark Mitchell, chair of the National Medical Association’s Council on Medical Legislation.The report noted that the United States have already observed the effects of climate change with more frequent, severe or longer-lasting extreme weather events, such as heatwaves.