Julia Jacobo, ABC News

Virgin Atlantic makes maiden transatlantic flight using 100% green fuel

Ying Tang/NurPhoto via Getty Images(LONDON) -- The Virgin Boeing 787 took off from London’s Heathrow Airport en...

Critically endangered Sumatran rhino born at Indonesian sanctuary

Indonesian Ministry of Environment and ForestryA sanctuary in Indonesia is celebrating the birth of a Sumatran...

You can buy a Christmas tree for as little as $5 if there’s a national forest nearby

National Forest Service(NEW YORK) -- The centerpiece for home holiday decorating could cost next to nothing...

Extreme wildfires are disrupting wildlife ecosystems in California, researchers say

David McNew/Getty Images(NEW YORK) -- Extreme wildfires that have been burning through the California landscape over...

Why cheetahs will be especially vulnerable to climate change, according to new research

Anup Shah/Getty Images(NEW YORK) -- Even the fastest animal in the world can't outrun the effects...

Maine shooting timeline: How the mass shootings in Lewiston unfolded

Steve Prezant/Getty Images(NEW YORK) -- Law enforcement officers in Maine are in the midst of...

Scientists have discovered an ancient river landscape hidden beneath the East Antarctica Ice Sheet

Daniela Simona Temneanu / EyeEm/Getty Images(NEW YORK) -- Global warming could reveal an ancient river landscape...

Amphibians are in widespread decline, and climate change is to blame, study says

Iain Lawrie/Getty Images (NEW YORK) -- A major class of vertebrate species is experiencing widespread population...

Ozone hole over Antarctica grows to one of the largest on record, scientists say

Paul Souders/Getty Images (NEW YORK) -- The annual ozone hole that forms over Antarctica has ballooned...

How researchers are using AI to save rainforest species in Puerto Rico: Exclusive

Angel Valentin/Getty Images(NEW YORK) -- Declining species in rainforests around the world may have a second chance...