The West Virginia race, one of Republicans' top targets, is heating up.
The Supreme Court extended the oral arguments for Tuesday's case to 90 minutes.
The groups presented new information that they said undercuts the push for Keystone XL.
Beekeepers are suing the Environmental Protection Agency (EPA) over its approval of a chemical they say kills honey producers.
The pesticide sulfoxaflor is “highly toxic” to bees and other insects, the groups say, and could be contributing to broader declines of bee populations around the world.
Gary Guzy will leave his post as deputy director at the end of the month.
EPA chief Gina McCarthy plans to discuss pollution standards with Chinese officials.
The East Coast states want the EPA to place stricter air pollution regulations on Midwest states.
The Supreme Court will hear arguments on the administration's cross-state air pollution rule.
A climate concession could help the Canadian government's case with President Obama.
The agreement allows the Chinese mining company to develop two of the 31 blocks of coal.