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The fight to save the whitebark pine, a critical tree species found in national parks
Dangerous heat raises safety concerns for visitors at U.S. National Parks
Critical equipment for Titanic sub search caught in red tape, National Geographic report says
Critical equipment for Titanic sub search caught in red tape, National Geographic report says
Scientists discover at least 20 new species in underwater ecosystem
Dr. Nate Smith on discovery of new dinosaur species
Early humans likely prompted the demise of woolly mammoths, other ancient species
Donald Trump Jr. leads RNC crowd in chant: 'Fight! Fight! Fight!'
'Over my dead body': Florida congressman slams leaked proposal to build golf courses at state parks
Disney theme parks to get major upgrade
How modern female crash test dummies could save lives Nonprofit working to rescue Americans in Haiti says it doesn't have the resources to save everyone Barbers save girl from being hit by cars Dr. Nate Smith on discovery of new dinosaur species 12-year-old volunteer paramedic works to save lives in Gaza White House says Hamas cease-fire negotiations hit 'critical stage' Judge issues critical ruling in Idaho college murders case 12-year-old volunteer paramedic works to save lives in Gaza Donald Trump Jr. leads RNC crowd in chant: 'Fight! Fight! Fight!' Maryland Gov. Wes Moore says state will do a full evaluation of all critical bridges