Malawi Inventor Lights Up His Whole Village Basically for Free–Starting With a Bicycle and a River
“To invent,” Thomas Edison said, “you need a good imagination and a pile of junk.” Colrerd Nkosi had all the junk he needed—and the will to bring electricity to his small village in Malawi—and he not only accomplished his goal, but won an award from the Queen of England. Using a repurposed corn-shelling machine motor […]
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Success! 1st Martian rock cored by Perseverance
NASA’s Perseverance rover has successfully cored its first rock on Mars. The good news comes after an earlier attempt failed in early August. The core sample will be stored onboard the rover for later return to Earth by a future mission.
The post Success! 1st Martian rock cored by Perseverance first appeared on EarthSky.
A Fisherman’s Underwater Sculptures Have Stopped Illegal Trawling – Bringing Art and Biodiversity Back to Italian Bay
When Paolo Fanciulli dropped 39 large marble sculptures down to the bottom of the sea off Tuscany’s Maremma Regional Park, it was not his first strike in the battle against unsustainable fishing, but it was his first step into the art world. This fascinating story, at the heart of which is a fascinating and charismatic […]
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‘Greenflation’ threatens to derail climate change action – Financial Times
Commodities updates Sign up to myFT Daily Digest to be the first to know about Commodities news. The writer, Morgan Stanley Investment Management’s chief global strategist, is author of ‘The Ten Rules of Successful Nations’ The world faces a growing…
This Yearâs Perseid Meteor Shower Will Be Super-Bright With Up To 50 Shooting Stars An Hour
During the next few weeks, look up and you can expect to see more than your average number of bright and shimmery shooting stars lighting up the night sky. The Perseids “are considered the best meteor shower of the year,” according to NASA. This year’s show began on July 17 and will last until August […]
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Buildings are a bigger contributor to climate change than cars — these start-ups are trying to help – CNBC
This June was the hottest in American history. The 116-degree heat melted power cables in Portland, Oregon, and smashed previous temperature records. Seattle recorded an all-time high of 108 degrees, as did the Canadian province of British Columbia, at a…
Full moon, Saturn, Jupiter July 23 to 26
The full moon, Jupiter, Saturn … what could be better? Watch as they light the night from dusk until dawn on July 23 to 26, 2021.
The post Full moon, Saturn, Jupiter July 23 to 26 first appeared on EarthSky.
Chris Freind: Scorching temps heat up climate change debate – Daily Local News
Pop quiz: What is the relevance of the following? 108. 116. 121. 130. If you guessed number of free throws Ben Simmons missed in the playoffs, or how many seasons it’ll take the Sixers to make the Finals, nice try….
Flood victims take shelter on roads, embankments after June floods in Bihar
The victims are living without shelter and are severely constrained for food and other necessities
Pushing the boundaries of colloidal quantum dots by making their sizes equal
(DGIST (Daegu Gyeongbuk Institute of Science and Technology)) Perovskite colloidal quantum dots (Pe-CQDs) are highly promising nanocrystals for optoelectronic applications. However, the size of the crystals should ideally be equal to ensure a consistent energy landscape. In a recent study, scientists clarified the relationship between differences in particle size — polydispersity — and the optoelectronic characteristics of Pe-CQDs. They showed that using equally sized, or ‘monodisperse,’ quantum dots results in markedly better performance in Pe-CQD solar cells, paving the way for future optoelectronic devices.
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