AFP: Hundreds of US scientists are joining a mass effort to speak out on climate change, experts said Monday after skeptics gained political ground with last week’s Republican wins in Congress. The moves signals a bold approach by scientists, typically reluctant to get involved in policy debates, as US President Barack Obama’s efforts to install stricter penalties for polluters face a steep climb in the legislature. One group of about 40 scientists has been mobilized as a “rapid response team” to…