National (U.S.)

"An internal review by the Environmental Protection Agency has found that its administrator did not violate its scientific integrity policy when he contradicted a fundamental tenet of climate science by denying that carbon dioxide pollution is the principal agent of global warming."

Attorneys general from 15 states filed a legal challenge on Tuesday over the Trump administration’s delay of Obama-era rules reducing emissions of smog-causing air pollutants."

"A federal appeals court has ruled against the Interior Department’s 2011 decision to delist the gray wolf under the Endangered Species Act."

"Documents released Tuesday in a lawsuit against Monsanto raised new questions about the company’s efforts to influence the news media and scientific research and revealed internal debate over the safety of its highest-profile product, the weed killer Roundup."

"The Trump administration waived environmental and other regulatory requirements today to expedite construction of barriers along the border between California and Mexico."

A breeder in southern Oregon is creating a new sort of dog that may look "just like the actual dire wolves that roamed the Americas during the last Ice Age, hunting bison and other megafauna, before going extinct."

"The growing crowds at U.S. National Parks have become unmanageable, jeopardizing the natural experience the parks were created to provide. With attendance this summer continuing to shatter records, officials are considering limiting use of the parks in order to save them."

"They're called 'ghost forests' — dead trees along vast swaths of coastline invaded by rising seas, something scientists call one of the most visible markers of climate change."

"WASHINGTON — Environmental advocates urged the Trump administration on Monday to reverse course on its move to set aside an Obama-era measure limiting water pollution from coal-fired power plants."