"Half of the world's mangrove ecosystems, with trees whose roots stretch down into brackish water, are at risk of collapse. That's according to the first assessment from the International Union for Conservation of Nature, a leading scientific authority on the status of species and ecosystems. The new report finds that sea level rise fueled by climate change is the biggest risk."

"Half the world's natural pasture land has been degraded by overexploitation and the impact of climate change, putting food supplies and livelihoods in peril, the United Nations body in charge of fighting desertification said on Tuesday."

"A campaign to add 10 billion oysters to the bay by 2025 — naturally purifying the water — is on pace even as Virginia and Maryland contend with agricultural runoff and other pollutants."

"An international tribunal said on Tuesday that countries have binding legal obligations to prevent greenhouse gasses from harming the world’s oceans in a landmark opinion that experts say could strengthen climate-vulnerable countries’ efforts to hold major polluters accountable and drive action to fight climate change."

"Threatened howler monkeys have been dropping dead from trees in Mexico's southeastern tropical forests in recent weeks amid a nationwide drought and heat waves that have sent temperatures soaring across much of the country."

"A new study uses genetics to chart cockroaches’ spread across the globe, from humble beginnings in southeast Asia to Europe and beyond. The findings span thousands of years of cockroach history and suggest the pests may have scuttled across the globe by hitching a ride with another species: people."

"More than a third of the Amazon rainforest is struggling to recover from drought, according to a new study that warns of a “critical slowing down” of this globally important ecosystem."

"Judgment day approaches for the monarch butterfly. Bound by a court settlement, the Fish and Wildlife Service is supposed to decide by early December whether the monarch warrants listing as threatened or endangered."

"Two conservation groups from Montana and Idaho sued the U.S. Fish and Wildlife Service this week over commercial grazing agreements in Red Rock Lakes National Wildlife Refuge that were renewed last year but which the groups say rely on an environmental analysis from 1994 in violation of federal law."

"Federal wildlife officials declared a rare lizard in southeastern New Mexico and West Texas an endangered species Friday, citing future energy development, sand mining and climate change as the biggest threats to its survival in one of the world’s most lucrative oil and natural gas basins."