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Science

Is planting trees to combat climate change 'complete nonsense'?

Bill Gates is emphatic: "I don't plant trees," he declared recently, wading into a debate about whether mass tree planting is really much use in fighting climate change.

The billionaire philanthropist was being probed on how he offsets his carbon emissions and insisted he avoids "some of the less proven approaches."

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U.S. to recommend antibiotic pill after sex to prevent STIs

Amid soaring rates of chlamydia, gonorrhea and syphilis, US health authorities on Monday proposed that doctors begin prescribing a common antibiotic as a pill taken after sex, despite concerns over fueling more resistant strains.

DoxyPEP, or doxycycline used as a post-exposure prophylaxis, was found to cut the risk of developing these infections in clinical trials involving men who have sex with men and transgender women who engaged in condomless sex.

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More than 100 dolphins dead in Brazilian Amazon as water temperatures soar

More than 100 dolphins have died in the Brazilian Amazon rainforest in the past week as the region grapples with a severe drought, and many more could die soon if water temperatures remain high, experts say.

The Mamiraua Institute, a research group of Brazil’s Ministry of Science, Technology and Innovation, said two more dead dolphins were found Monday in the region around Tefe Lake, which is key for mammals and fish in the area.

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Three scientists win Nobel Prize in physics for looking at electrons in atoms during split seconds

Pierre Agostini of The Ohio State University in the US; Ferenc Krausz of the Max Planck Institute of Quantum Optics and Ludwig Maximilian University of Munich in Germany; and Anne L’Huillier of Lund University in Sweden won the award.

The laureates are being recognised “for their experiments, which have given humanity new tools for exploring the world of electrons inside atoms and molecules. They have demonstrated a way to create extremely short pulses of light that can be used to measure the rapid processes in which electrons move or change energy", the jury said in a statement.

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Nobel-winning mRNA pioneer Weissman now wants to defeat Covid forever

From developing a one-and-done coronavirus shot to overcoming misinformation and global vaccine inequity, Nobel prize winner Drew Weissman says that at 64, he's only "speeding up."

The University of Pennsylvania immunologist was awarded the biggest accolade in medicine on Monday for his pioneering research on messenger RNA, the technology behind Covid-19 vaccines that changed the course of the pandemic.

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More schools stock overdose reversal meds, but others worry about stigma

Last year, a student fell unconscious after walking out of a bathroom at Central High School in Pueblo, Colo.

When Jessica Foster, the school district’s lead nurse, heard the girl’s distraught friends mention drugs, she knew she had to act fast. Emergency responders were just four minutes away.

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Russia says moon shot failed due to control unit malfunction

MOSCOW — Russia on Tuesday blamed a malfunction in an on-board control unit for causing its first lunar mission in 47 years to crash into the moon in August.

The state space corporation, Roscosmos, said the control unit failed to turn off the propulsion system, which blasted for one and a half times longer than necessary as the craft hurtled towards the moon.

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Psychedelics plus psychotherapy can trigger rapid changes in the brain − new research at the level of neurons is untangling how

The human brain can change – but usually only slowly and with great effort, such as when learning a new sport or foreign language, or recovering from a stroke. Learning new skills correlates with changes in the brain, as evidenced by neuroscience research with animals and functional brain scans in people. Presumably, if you master Calculus 1, something is now different in your brain. Furthermore, motor neurons in the brain expand and contract depending on how often they are exercised – a neuronal reflection of “use it or lose it.”

People may wish their brains could change faster – not just when learning new skills, but also when overcoming problems like anxiety, depression and addictions.

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How do astronomers know the age of the planets and stars?

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

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Interesting link between self-alienation and death anxiety uncovered by new psychology research

A person’s level of self-alienation, or feeling disconnected from oneself, plays a pivotal role in the relationship between perceived meaning in life and death anxiety, according to new research published in theJournal of Personality. The findings suggest that merely recognizing a purpose in life may not be enough to shield us from existential dread. For decades, psychologists have been curious about how humans grapple with the concept of death. The idea that we will all eventually cease to exist can be profoundly unsettling. This fear of death, known as death anxiety, has long captured the in...

Inside Mike Lindell's scheme to build an election fraud detector straight out of sci-fi

At his 2023 “Election Summit,” Mike Lindell, the exuberant pillow peddler turned election truther, was more manic than usual.

Lindell had assembled the most fervent election deniers from every state, mostly Trump cultists, at a conference center in Springfield, Mo., where, with great fanfare, he promised to unveil “The Plan” to prevent elections from being stolen.

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Nobel Prize in medicine awarded to Katalin Kariko, Drew Weissman for Covid 19 vaccine research

The pair, who had been tipped as favorites, were honored “for their discoveries concerning nucleoside base modifications that enabled the development of effective mRNA vaccines against COVID-19,” the jury said.

“The laureates contributed to the unprecedented rate of vaccine development during one of the greatest threats to human health in modern times,” it added.

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