In the rugged terrain where Mexico and the United States meet, a border wall is just the latest obstacle fragmenting habitats and disrupting migration paths. Here’s how a cadre of conservationists is ...

Removing trees deprives the forest of portions of its canopy, which blocks the sun’s rays during the day and retains heat at ...

For the first time, Antarctic krill have been found on seafloor vents. One scientist is working to figure out what they are doing there. Kim Bernard, at left, is an expert on Antarctic krill, a ...