"Sen. Bernie Sanders called on President Obama to take action against the controversial Dakota Access oil pipeline during a protest outside the White House on Tuesday with members of the Standing Rock Sioux Tribe and other tribal nations."

"A Native American tribe from the northeast shore of Lake Michigan is trying to halt the approval of a multi-million-dollar settlement between Canadian pipeline giant Enbridge, Inc., and the U.S. Environmental Protection Agency. And it is using arguments similar to those made by a Sioux tribe in its campaign against a North Dakota oil pipeline that has so far succeeded in stopping construction."

"Letter from nine legal scholars says Rep. Smith's subpoenas of state attorneys general and organizations were 'invalid and constitutionally impermissible.'"

"Royal Dutch Shell has started production at the world’s deepest underwater oil and gas field, 1.8 miles beneath the sea surface in the Gulf of Mexico."

"A House committee on Thursday voted to exempt some leases from the White House's moratorium on leasing federal land for coal mining."

"Brushing aside a fresh court ruling, three federal agencies said they are withholding a permit on a portion of the project near Sioux Land."

"State regulators last year documented 276 new cases of groundwater contamination across Texas, a slight increase compared to 2014 but far fewer than in years past."

"The governor of North Dakota has activated the state's National Guard ahead of a U.S. District judge's decision Friday morning that could inflame protesters who have been gathered here for weeks in an effort to block a pipeline project."

"A North Dakota judge issued a warrant Wednesday for the arrest of Green Party presidential candidate Jill Stein, who is accused of spray-painting construction equipment during a protest against the Dakota Access pipeline."

"After this week's G20 summit in China failed to set a target year to phase out hundreds of billions of dollars in state subsidies for polluting fossil fuels, green groups and experts are urging Germany to finish the job as host of next year's summit."