Ancient South African rocks reveal how phosphorus recycling may have helped Earth hold onto oxygen more than 2 billion years ago, sustaining conditions that allowed life to thrive. More than 2 billion years ago, oxygen began building up in Earth’s atmosphere, transforming a planet whose oceans and air had contained very little of the gas. […]
2 Billion-Year-Old Rocks Reveal How Life Helped Stabilize Earth’s Atmosphere
Ancient South African rocks reveal how phosphorus recycling may have helped Earth hold onto oxygen more than 2 billion years ago, sustaining conditions that allowed life to thrive. More than 2 billion years ago, oxygen began building up in Earth’s atmosphere, transforming a planet whose oceans and air had contained very little of the gas. […]
2 Billion-Year-Old Rocks Reveal How Life Helped Stabilize Earth’s Atmosphere
Ancient South African rocks reveal how phosphorus recycling may have helped Earth hold onto oxygen more than 2 billion years ago, sustaining conditions that allowed life to thrive. More than 2 billion years ago, oxygen began building up in Earth’s atmosphere, transforming a planet whose oceans and air had contained very little of the gas. […]
2 Billion-Year-Old Rocks Reveal How Life Helped Stabilize Earth’s Atmosphere
Ancient South African rocks reveal how phosphorus recycling may have helped Earth hold onto oxygen more than 2 billion years ago, sustaining conditions that allowed life to thrive. More than 2 billion years ago, oxygen began building up in Earth’s atmosphere, transforming a planet whose oceans and air had contained very little of the gas. […]
2 Billion-Year-Old Rocks Reveal How Life Helped Stabilize Earth’s Atmosphere
Ancient South African rocks reveal how phosphorus recycling may have helped Earth hold onto oxygen more than 2 billion years ago, sustaining conditions that allowed life to thrive. More than 2 billion years ago, oxygen began building up in Earth’s atmosphere, transforming a planet whose oceans and air had contained very little of the gas. […]
2 Billion-Year-Old Rocks Reveal How Life Helped Stabilize Earth’s Atmosphere
Ancient South African rocks reveal how phosphorus recycling may have helped Earth hold onto oxygen more than 2 billion years ago, sustaining conditions that allowed life to thrive. More than 2 billion years ago, oxygen began building up in Earth’s atmosphere, transforming a planet whose oceans and air had contained very little of the gas. […]
2 Billion-Year-Old Rocks Reveal How Life Helped Stabilize Earth’s Atmosphere
Ancient South African rocks reveal how phosphorus recycling may have helped Earth hold onto oxygen more than 2 billion years ago, sustaining conditions that allowed life to thrive. More than 2 billion years ago, oxygen began building up in Earth’s atmosphere, transforming a planet whose oceans and air had contained very little of the gas. […]
Switzerland’s Glaciers Lost More Than 5% of Their Ice in Just One Year
Switzerland’s glaciers lost more than 5 percent of their ice in a single year, with record melt, disappearing glaciers, and nearly one-fifth of the country’s glacier volume now gone in just five years. By September, bare glacier ice stretched across parts of the Swiss Alps where snow should still have been shielding the surface from […]
Scientists Decode a 12,000-Year-Old Mystery Hidden in Ancient Spear Points
An analysis of roughly 500 spear points suggests that inherited knowledge of stone deposits helped Ice Age hunters decide which tools were worth carrying. Ice Age hunters in the Tennessee River Valley sometimes threw away stone spearheads that were still usable. Leaving a point behind lightened the load, but replacing it required suitable rock, something […]
Scientists Decode a 12,000-Year-Old Mystery Hidden in Ancient Spear Points
An analysis of roughly 500 spear points suggests that inherited knowledge of stone deposits helped Ice Age hunters decide which tools were worth carrying. Ice Age hunters in the Tennessee River Valley sometimes threw away stone spearheads that were still usable. Leaving a point behind lightened the load, but replacing it required suitable rock, something […]