There's Little Evidence Marijuana Will Help Ease Your Chronic Pain or PTSD

The Threat of Cascading Extinctions on Earth Could Be Greater Than We ThoughtAustralian Bushfires Spewed Volcanic Eruption-Worth of Aerosols Into The Stratosphere

That Dramatic Beijing 'Sandstorm' Was Actually Something Worse, Says GeologistGigantic Stone 'Tiger Stripes' Etched Across Ethiopia Pose an Ancient MysteryThere's a Reason Giant Sinkholes Keep Swallowing Things, But We Can Make It Stop

Record-Breaking Sandstorm Chokes Beijing in a Surreal Veil of Orange DustThe Amazon May Now Actually Be Making Climate Change Worse, Scientists Warn

Interactive Map Highlights The Best Places to Plant New Trees in The US

Northern Hemisphere Summers Are Trending Towards a Hugely Disruptive LengthThis Is The Point When People Start Trusting Algorithms More Than Other Humans

World's Whitest Paint Reflects 98.1% of Light. It Could Help in The Climate FightPentagon Confirms 'Pyramid-Shaped' UFO Video Footage Is Authentic

Elon Musk's Controversial Neuralink Wants to Implant Human Brain Chips Within a YearAI Is Not Actually an Existential Threat to Humanity, Scientists Say