Americans are producing a lot more garbage than they did 50 years ago—and not just because the country’s population has risen: each person in the U.S. generates an average of 4.5 pounds of waste a day, compared with just 3.25 pounds in 1970. What they throw away has also changed, with plastic waste making … Ver más The clear, inexorable rises of the curves in the two graphs below are at the heart of the global warming problem. As humans have piled more cars onto roads and burned more coal and … Ver más Among the fundamental issues that drove Nelson and his colleagues to hold the first Earth Day was the rampant, deadly pollution clogging U.S. skies. One of the worst air pollution disasters in the nation’s history came in the fall … Ver más Perhaps the most emblematic moment of the crisis that afflicted U.S. waterways was the fire that erupted on the Cuyahoga River on June 22, 1969. Effluent from industrial activity along the river, running from Akron, Ohio, to … Ver más Web23 de jul. de 2024 · This ancient idea of light and sight was taught in the West in various forms until the 12th Century AD. It was rejected by Ibn al-Haytham, a 10th Century scientist from what is now Iraq. Al-Haytham was known in the West as Alhazen, with the nicknames ‘Ptolemy the Second’ and ‘The Physicist’.
A brief history of light: How we discovered the nature of light
Web7 de nov. de 2024 · Nature at 150: evidence in pursuit of truth. A century and a half has seen momentous changes in science, but evidence and transparency are more important … Web10 de sept. de 2024 · The first climate model, developed over 50 years ago in the early days of climate science, helped scientists gauge how the ocean and atmosphere interacted … orchard 2nd ward
How ancient people fell in love with bread, beer and other carbs - Nature
Web16 de ago. de 2024 · Lacking human oversight, glitches in oil refineries and nuclear plants would go unchecked, likely resulting in massive fires, nuclear explosions and devastating nuclear fallout. "There's going to ... Web15 de dic. de 2024 · The Last 50 Years Health – Life expectancy averaged at 59-years-old for men and 63-years-old for women in 1970 and now averages at 75-years-old for men … ips school 39