LINCOLN, Neb. (AP) — An already sizable expansion project at the Lincoln Children’s Zoo is growing even bigger after donations exceeded the original fundraising goal.

PORTLAND, Maine (AP) — The federal government outlined an ambitious, potentially costly new plan to restore Atlantic salmon in the United States, where rivers teemed with the fish before dams, pollution and overfishing decimated their populations.

PORTLAND, Maine (AP) — Scientists in Maine are using DNA to try to preserve the remaining populations of a fish that lives in 14 lakes and ponds in the state and nowhere else in the continental United States.

NEW YORK (AP) — Scientists report that a fish can pass a standard test of recognizing itself in a mirror — and they raise a question about what that means.

PORTLAND, Maine (AP) — Interstate fishing managers are starting the process of trying to reduce the amount of lobster fishing gear off the East Coast in an attempt to help save a declining species of rare whale.

WASHINGTON (AP) — While 2018 was the fourth-warmest year on record, British meteorologists are predicting the next five years will be much hotter, maybe even record-breaking.

KATHMANDU, Nepal (AP) — One-third of Himalayan glaciers will melt by the end of the century, threatening water sources for 1.9 billion people.

SALT LAKE CITY (AP) — National parks across the United States are scrambling to clean up and repair damage that visitors and storms caused during the recent government shutdown while bracing for the possibility of another closure ahead of the busy Presidents Day weekend later this month.

MEXICO CITY (AP) — The population of monarch butterflies wintering in central Mexico is up 144 percent over last year, experts said Wednesday.