RealClearScience - Opinion, News, Analysis, Video and Polls
网页3 天之前 · RealClearScience - Opinion, News, Analysis, Video and Polls. Thursday, October 10. Climate Science's Global Warming Time Machine Fantasy. Carton & Malm, The Conv. Report: DEI Is Transforming the National Science Foundation. Rupa Subramanya, FP.
Thought to Be Constant, Dark Energy Might Vary Over Time
网页1 天前 · From 1999 to 2004, the cosmological community came together to agree that the universe was 5% normal (baryonic) matter, 25% dark matter (unknown, invisible matter), and 70% “dark energy” (an expansive force) – essentially a cosmological constant, which was first postulated by Einstein. The discovery that the universe was dominated by this ...
Plastic Bottle Recycling in the U.S. Is Abysmal. A Simple Plan Could ...
网页1 天前 · Through a complex economic analysis, the MIT researchers estimated that if the U.S. implemented a nationwide DRS with a 10 cent refund value for recycling PET bottles, 82 percent of them would be recycled by 2035. Moreover, as mechanically recycled PET offers an 85% reduction in emissions compared to …
Court Decision Could Reshape Water Fluoridation in the U.S.
网页5 天之前 · A federal judge last month handed a major victory to opponents of water fluoridation, capping a seven-year legal battle over whether the U.S. Environmental Protection Agency has failed to protect the public from potential toxic effects of fluoride, which is added to the tap water of around 200 million Americans.. The decision is sure to invite further scrutiny of the contested science behind ...
What Does Good Sleep Actually Look Like? | RealClearScience
网页4 天之前 · Deepest sleep usually happens during the first half of the night. Verin/Shutterstock. Adults usually move through five or six sleep cycles in a night, and it is entirely normal to wake up briefly at the end of each one. That means we might be waking up five times during the night. This can increase with older age and still be healthy.
RealClearScience - Opinion, News, Analysis, Video and Polls
网页Science Is Taking the Shame Out of Parenting. Lucy Jones, The Guardian. Farmed Oysters Are Mysteriously Dying Off in the Millions. Julia Musto, Independent. Stunningly Preserved Bones of Extinct Caribbean Monkey. Jess Cockerill, Sci Alert.
Articles - RealClearScience
网页3 天之前 · 7,000 Microplastics Studies Reveal the Massive Scope of the Problem. Karen Raubenheimer - September 21, 2024. It’s been 20 years since a paper in the journal Science showed the environmental accumulation of tiny plastic fragments and fibres. It named the particles “microplastics”. The paper opened an entire research field.
Making Nuclear Space Propulsion a Reality | RealClearScience
网页2024年10月5日 · NASA plans to send crewed missions to Mars over the next decade – but the 140 million-mile (225 million-kilometer) journey to the red planet could take several months to years round trip.. This relatively long transit time is a result of the use of traditional chemical rocket fuel. An alternative technology to the chemically propelled rockets the agency develops now is called nuclear thermal ...
The Universe Is Smoother Than Theory Suggests
网页2024年9月27日 · But detailed mapping of the CMB tells us a great deal more than this. A key insight from CMB maps obtained with the Planck telescope is that the universe was also exceptionally smooth at early times. There was only a 0.001% variation from place to place in the density and temperature of the matter and radiation in the universe.
Let's Stop Pretending About the Covid-19 Vaccines
网页2021年8月23日 · Let’s stop pretending the vaccines are 90% effective and breakthrough cases are “uncommon.”. The real world effectiveness of the Moderna and Pfizer (mRNA) vaccines appears to be sinking like a stone. We started at 94+% within 2 months of vaccination and against the original SARS-CoV-2 strain.