Environment News Service: Climate change has made Senator Barack Obama’s list of “threats of the 21st century” alongside terrorism and nuclear proliferation, poverty, genocide, and disease. Accepting the Democratic nomination for president Thursday night before 75,000 supporters at Denver’s Invesco Field, Obama said he would “build new partnerships” to defeat these threats. “And for the sake of our economy, our security, and the future of our planet, I will set a clear goal as president – in 10 years, …