If you live with, very shy migrating birds, they remember you, from season to season, based on the consistency of your behavior, and quality of your snacks! Cheers to you from the very wise, and very hungry, orioles~Orioles Closer~ —
Independent Group Leader, Max Planck Institute for the Science of Human HistoryApril 17, 2021
Our species,Homosapiens, rose in Africa some300,000 years ago. The objects that early humans made and used, known as the Middle Stone Age material culture, are found throughout much of Africa and include a vast range of innovations.
Among them arebow and arrow technology, specializedtool forms, the long-distance transport of objects such asmarine shellsandobsidian,personal ornamentation, the use ofpigments,water storage, and art. Although it is possible that other ancestors of modern humans contributed to this material culture in Africa, some of the earliest Middle Stone Age stone tools have been found with the oldestHomo sapiensfossils foundso far.
The textbook view…
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Don’t count on aliens.
Astronomers have encountered a mystery surprisingly close to Earth. TheGuardianandScientific Americanhave learned thatBreakthrough Listenastronomers using the Parkes telescope in Australia discovered a strange radio signal coming from Proxima Centauri, the star system closest to the Sun. The signal occupies an oddly narrow 982MHz band that’s unused by human-made spacecraft, yet not possible through known natural processes. The frequency shifts up, too, rather than down like you’d expect for a planet.
Don’t count on this as a sign of aliens. Although Proxima Centauri does host apotentially habitable planet, the signal hasn’t been detected since its…
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Morgan McFall-Johnsen 20 hours ago
- Astronomers discovered a planetoid orbiting the sun further than any known object in the solar system.
- Called “Farfarout,” the object orbits the sun every 1,000 years.
- Objects like Farfarout could help astronomers figure out whethera massive planethides in the outskirts of our solar system.
- Visit the Business section of Insider for more stories.
Astronomers have discovered the most distant object ever found in our solar system.
The planetoid — the term for a small chunk of rock or dust or ice orbiting the sun — is appropriately nicknamed “Farfarout,” after the previous record-holder, “Farout,” which was discovered by the same astronomers in 2018. After years of observing the object’s trajectory across the sky, that team of researchers announced on Wednesday that they could confidently say Farfarout is, well, much farther out than any solar-system object seen…
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- Story by Peter Brannen
- MARCH 2021 ISSUEPLANET
A new guide to living through climate change.Robinson Meyer brings you the biggest ideas and most vital information to help you flourish on a changing planet.
Photo Illustrations by Brendan Pattengale | Maps by La Tigre
Images above:Glaciers from the Vatnajökull ice cap, in Iceland
Brendan Pattengale is a photographer who explores how color can convey emotions in an image. In his photo illustrations throughout this article, the colors of the original photos have been adjusted, but the images are otherwise unaltered.
This article was published online on February 3, 2021.
We live ona wild planet, a wobbly, erupting, ocean-sloshed orb that careens around a giant thermonuclear explosion in the void. Big rocks whiz by overhead, and here on the Earth’s surface, whole continents crash together, rip apart, and occasionally turn inside out, killing nearly everything. Our…
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There are more antelope in Africa than any other continent. Of the world’s 91 antelope species, most are native to Africa, and all belong to the family Bovidae. Here are a few of my favorites.
Many continents do not have native antelope: Europe, Australasia, Antarctica and the Americas.
What a beautiful, natural sight it is, then, to observe antelope grazing and leaping across Africa’s savannahs.
They vary tremendously in size.
Larger antelope include the kudu and waterbuck.
Antelope horns vary also. Unlike deer antlers, antelope horns grow continuously and are never shed.
The horns are used as weapons, especially when fighting among their own species.
Sometimes both genders of a species have horns, with the male horns often bigger; but there are variations. In kudus, only the…
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Throughout time and across the globe, cranes have symbolized longevity, wisdom, immortality, happiness and good fortune. Here is a gift of cranes as we welcome the new year.
There are 15 species of cranes in the world, all in one family, Gruidae. They fall under three genera; each genera–Antigone, Balearica, Grus–is represented here today (pre-pandemic).
Antigone. The sandhill crane, Antigone canadensis, is one of North America’s two crane species.
While not all cranes are migratory, the sandhill cranes are.
In Northern California we welcome their migrations on the Pacific Flyway every winter.
Cranes are gregarious birds and form large flocks. They have specialized trachea and a big vocabulary, a very vocal bird.
Many cultures associate happiness with the crane, and it is easy to see why when you have witnessed…
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SCIENCEALERT STAFF31 DECEMBER 2020
Just when we thought octopusescouldn’t be any weirder, it turns out that they and their cephalopod brethren evolve differently from nearly every other organism on the planet.
In a surprising twist, in April 2017 scientists discovered that octopuses, along with some squid and cuttlefish species, routinely edit their RNA (ribonucleic acid) sequences to adapt to their environment.https://8fca1865db38fa71528b67178c37ab73.safeframe.googlesyndication.com/safeframe/1-0-37/html/container.html
This is weird because that’s really not how adaptations usually happen in multicellular animals. When an organism changes in some fundamental way, it typically starts with a genetic mutation – a change to the DNA.
Those genetic changes are then translated into action by DNA’s molecular sidekick, RNA. You can think of DNA instructions as a recipe, whileRNA is the chefthat orchestrates the cooking in the kitchen of each cell, producing necessary proteins that keep the whole organism going.
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| By: Jessica Bridgers | Reading time: 4 minutesAdvocates are asking the United Nations to consider the role of animals in their COVID-19 recovery policies. They fear the return to ‘business as usual’ could lead to another deadly pandemic.|
Almost as soon as it became clear that our societies and economic systems would not continue as normal through the COVID-19 pandemic, calls to “Build back better” and even to “Build forward” began to grow louder and more urgent across the world.
COVID-19 is yet another in a series of diseases that have emerged from humans’ interactions with animals and has been preceded by HIV, Ebola, swine flu, and avian influenza, to name a few.
But even as the policies to achieve this “build back” are being proposed, debated, and implemented, the root causes of the pandemic lack full recognition, muting the ability of these policies…
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Chemical compounds in foods or beverages like green tea, muscadine grapes, and dark chocolate can bind to and block the function of a particular enzyme in the SARS-CoV-2, the virus responsible for COVID-19. – DNA Team
In a unique study, researchers have claimed that chemical compounds in foods or beverages like green tea, muscadine grapes, and dark chocolate can bind to and block the function of a particular enzyme, or protease, in the SARS-CoV-2, the virus responsible for COVID-19.
“Proteases are important to the health and viability of cells and viruses. If proteases are inhibited, cells cannot perform many important functions—like replication, for example,” said study author De-Yu Xie from the North Carolina State University in the US.
“One of our lab’s focuses is to find nutraceuticals in food or medicinal plants that inhibit either how a virus attaches to human cells or the propagation of…
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