Explore the urban canopies of major cities with Treepedia
January 6, 2017, 3:19 p.m. by Matt Hickman
The MIT project ranks Vancouver as having the most tree-dense cityscape.
The once hopelessly polluted Anacostia River is making a comeback
January 3, 2017, 7:34 a.m. by Jaymi Heimbuch
Krista Schlyer is photographing the people, wildlife and landscapes of America's 'forgotten' river.
Massive river of molten iron found flowing in Earth's core
December 27, 2016, 6:58 p.m. by Bryan Nelson
Scientists don't know why it's speeding up.
Italy's deadly supervolcano is readying itself for another eruption
December 27, 2016, 10:52 a.m. by Jaymi Heimbuch
Campi Flegrei — which translates to 'the burning fields' — has had 2 major, catastrophic eruptions in its history. Now, it's showing signs of reawakening.
President Obama protects the Arctic Ocean from oil drilling
December 21, 2016, 7 a.m. by Jaymi Heimbuch
The U.S. and Canada together have acted to shield vast swaths of the Arctic and Atlantic oceans from oil and gas exploitation.
Americans are quietly preserving 56 million acres of private land
December 20, 2016, 8:15 a.m. by Russell McLendon
U.S. landowners voluntarily protect more land (and water) than all national parks in the lower 48 states, a new census shows.
Meteorite fragment contains bizarre crystals never seen before in nature
December 19, 2016, 3:03 p.m. by Bryan Nelson
So-called 'quasicrystals' might represent a third state of solid matter.