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A decade of carbon dioxide data from space gets an upgrade

Every day, two NASA space instruments known as the Orbiting Carbon Observatory-2 and -3 (OCO-2 and OCO-3) capture more than a million observations of sunlight reflecting off Earth's surface. Using the physics of how light travels through the air, an algorithm converts these raw data into atmospheric carbon dioxide (CO₂) concentrations.

Phys.org · Oct 30
Drone-based AI system tracks cattle growth without stressful trips to scales

In beef cattle production, determining the ideal time to sell makes all the difference in a producer's costs. This is because, once an animal reaches its natural growth limit, it stops gaining weight significantly. From that point on, every additional day in a feedlot means spending money on feed without gaining meat in return.

Phys.org · Oct 30
The Guardian view on 50 years of The Selfish Gene: flawed, outdated, yet still a model of truly popular science writing | Editorial

Richard Dawkins’ first work has thrilled fans and frustrated critics for five decades. The science has moved on, but any writer looking to supplant its place must learn its lessons Richard Dawkins’ The Selfish Gene was not predicted to be a success. Its initial print run, published this week in 1976, was just 5,000. It went on to sell millions, and is perhaps the most influential work of pop-science ever. For 50 years, it has been the go-to resource for the layperson seeking to understand evolution. What accounts for its enduring power? Prof Dawkins’ central claim, that “we are survival machines – robot vehicles blindly programmed to preserve the selfish molecules known as genes” was provocative, stripping the messy stuff of human and other life down to a simple law. And yet the book is primarily concerned with proving that complex, selfless behaviour such as altruism in animals can emerge from these basic “selfish” drives, satisfyingly resolving an apparent paradox. Prof Dawkins – a zoologist by training – also succeeded in conjuring entertaining, vividly drawn vignettes of the lives of animals, from lions and ants to hawks and honeybees, to make his points. Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here . Continue reading...

The Guardian · Oct 30
Migrating seabirds face a surprising problem: jet lag

Oxford study shows Manx shearwaters get lost when their body clocks get out of sync Seabirds returning from foraging trips can be thrown hundreds of miles off course by a form of jet lag that arises when their body clocks get out of sync with local time, researchers say. Tracking data from Manx shearwaters on the west coast of the UK revealed that when the birds returned home to their colonies after trips over the Atlantic, their rapid eastward flights disrupted their sense of time and navigation. Continue reading...

The Guardian · Oct 29
Archaeologists may have just found the world's oldest shipwreck

A mysterious shipwreck off Turkey’s coast may be the oldest ever discovered, dating back approximately 4,500 years to the age of the Egyptian pyramids. Although the wooden vessel has disappeared, its surviving pottery cargo reveals clues about an ancient trading network that may have connected distant Mediterranean civilizations. Researchers believe the ship may have crashed against rocks during a storm while transporting valuable goods such as oil, wine, or tree resin.

Science Daily · Oct 26
SpaceX's Starship blasts off in first rocket launch since IPO

Elon Musk's aerospace company, SpaceX, launched its massive Starship rocket in its first test flight since the company went public. Since achieving the largest IPO in history, SpaceX's stock has dropped drastically. Mark Strassmann takes a look.

CBS News · Jul 25