The Bronx River is home to obsolete dams. Plans to remove them could boost efforts to restore dwindling river herring ...

In times of desperation, female sawtooth sharks have been known to reproduce sans males. For other species, solo reproduction is downright vanilla. blickwinkel / Alamy When it comes to getting ...

DENVER (KDVR) — Eight years after crews saved a rare fish from a wildfire, biologists are seeing their work pay off. Colorado Parks and Wildlife said that during the Hayden Creek Fire, which burned ...