Category: earth

But his larger point is that “biodiversity loss is not that complicated a mystery.” The amount of area on planet earth devoted ot agriculture is now more than twice the size of North America.

We’re destroying and degrading the habitats of other species to grow food for our own. This means the fate of the world’s bugs, bunnies and other creatures and critters — and what’s left of the forests, wetlands and other habitats they call home — depends more than anything else on what we put in our mouths and how it gets made….

Humanity needs to start shrinking our agricultural footprint and expanding our natural footprint, after thousands of years of doing the reverse. This will be an extraordinary challenge, because we’ll also need to produce more than 7.4 quadrillion additional calories every year to feed our growing population, in an era when climate-fueled droughts, heat waves, floods and blights could make it harder to grow food…. If we are serious about cleaning up the mess we’re making for less influential species, there are four things individuals as well as nations and corporations can do. The first is to eat less meat, which would be a lot easier if meat weren’t so beloved and delicious….

But the inconvenient truth is that when we eat cows, chickens and other livestock, we might as well be eating macaws, jaguars and other endangered species. That’s because livestock chew up far more land per calorie than crops. Producing beef is 100 times as land-intensive as cultivating potatoes and 55 times as land-intensive as peas or nuts. Livestock now use nearly 80 percent of agricultural land while producing less than 20 percent of calories. Cattle are the leading driver of deforestation in the Amazon, followed by soybeans, another commodity, which get fed to pigs and chickens…. If Americans continue to average three burgers a week while the developing world starts to follow our path, it’s hard to see how the Amazon survives.

But it’s at least possible that we could shrink agricultural footprints by shifting our diets toward meat made without livestock, like the plant-based substitutes offered by companies such as Impossible Foods and Beyond Meat or maybe someday cultured meat grown from animal cells.
Grunwald also recommends wasting less food. “About a third of the food grown on Earth is lost or tossed before it reaches our mouths, which means a third of the land (as well as the water, fertilizer and other resources) used to grow that food is also wasted.”

The third way to ease the global land squeeze “would be to stop using productive farmland for biofuels like ethanol and biodiesel — and to stop burning trees for power.” And finally, “farmers will have to supersize their yields enough to make a lot more food with a lot less land.

Analysis of the satellite images by Soar Earth, an Australian startup that aggregates satellite imagery and crowdsourced maps into an online digital atlas, suggests that the workers have already excavated around 26 million cubic meters of earth and rock — 78 times the volume of the world’s tallest building, the Burj Khalifa. Official drone footage of The Line’s construction site, released in October, indeed showed fleets of bulldozers, trucks, and diggers excavating its foundations. Visit The Line’s location on Google Maps and Google Earth, however, and you will see little more than bare rock and sand.

To re-create the swirling winds of the Blue Marble — including a cyclone over the Indian Ocean — the researchers fed weather records from 1972 into the supercomputer-powered software. The resulting world captured distinctive features of the region, such as upwelling waters off the coast of Namibia and long, reedlike cloud coverage. Experts say the stunt highlights the growing sophistication of high-resolution climate models. Those are expected to form the core of the European Union’s Destination Earth project, which aims to create a ‘digital twin’ of Earth to better forecast extreme weather and guide preparation plans.

The event took place at the International Atomic Energy Agency’s “Atoms for Climate” pavillion, where the IAEA’s climate advisor presented the debate’s topic as “Nuclear Energy: Climate Friend or Foe?” (and introduced the two debaters as “enthusiastic young climate champions”). The Youth Strike for Climate activist objected to commiting humanity to 1 million years of maintaining nuclear waste. But he also argued that extreme weather was creating additional security risks, that the per-kilowatt hour cost was economically prohibitive, that nuclear plants were politically unpopular — and that anyways, they take too long to build giving our current climate crisis. “We need fast solutions.”

The Radiant Energy founder disagreed, arguing over specific statistics and insisting that nuclear energy should be considered a low-carbon energy solution, and also safe. (He pointed out that Chernobyl’s nuclear plant actually continued operating for 14 years after its 1986 nuclear accident.) Interestingly he also argued that in the Netherlands there’s a museum of nuclear waste — a science museum attached to their nuclear facility — “where they don’t just have the high-level waste, they have the highest part of high-level waste, the most dangerous isotopes, separated from the nuclear fuel. The most radioactive stuff — very hot for 500 years — and they have a tour where you can walk over it, and you can feel the warmth from the floor from the radioactive isotopes….

“You can absolutely manage the safe, secure, and even educational storage of the most radioactive isotopes… We know very well how to manage it.”

The emissions tool employs over 300 satellites; sensors on land, planes and ships; as well as artificial intelligence to build models of emission estimates. Right now, it tracks about 72,000 of the highest emitting greenhouse gas sources. That includes every power plant, large ship and large plane in the entire world, Gore said. And that’s just the beginning. By next year, Gore hopes to be tracking millions of major emitting sites. “We will have essentially all of them,” he said. Gore said 75% of the world’s greenhouse emissions come from countries that have made pledges to become carbon-neutral by 2050. “Now that they know exactly where it’s coming from, they have tools that will enable them to reduce their emissions,” he told NPR.

He added that the database, which is free and accessible online, can help inform countries about how much pollution is being emitted by the companies they are working with or considering working with. It is not enough for companies to self-report, he said. For instance, Climate Trace found that the oil and gas industry has been significantly underreporting its emissions. That doesn’t mean companies were intentionally cheating, Gore added. However, he said underreporting prevents governments and the public from staying on track with their net-zero pledge. Six regional governments in Mexico, Europe and Africa have already entered into working agreements for using the tool, Gore said.

Insects’ tiny bodies can pick up positive charge while they forage — either from the friction of air molecules against their rapidly beating wings (honeybees can flap their wings more than 230 times a second) or from landing onto electrically charged surfaces. But the effects of these tiny charges were previously assumed to be on a small scale. Now, a new study, published Oct. 24 in the journal iScience, shows that insects can generate a shocking amount of electricity.

To test whether honeybees produce sizable changes in the electric field of our atmosphere, the researchers placed an electric field monitor and a camera near the site of several honeybee colonies. In the 3 minutes that the insects flooded into the air, the researchers found that the potential gradient above the hives increased to 100 volts per meter. In other swarming events, the scientists measured the effect as high as 1,000 volts per meter, making the charge density of a large honeybee swarm roughly six times greater than electrified dust storms and eight times greater than a stormcloud. The scientists also found that denser insect clouds meant bigger electrical fields — an observation that enabled them to model other swarming insects such as locusts and butterflies.

The European Commission has proposed a “modernization” of the agreement, which would end the writ of the treaty’s secret investor-state courts between EU members. That plan is expected to be discussed at a meeting in Mongolia next month. A French government official said Paris would not try to block the modernization blueprint within the EU or at the meeting in Mongolia. “But whatever happens, France is leaving,” the official said. While France was “willing to coordinate a withdrawal with others, we don’t see that there is a critical mass ready to engage with that in the EU bloc as a whole,” the official added.

The French withdrawal will take about a year to be completed, and in that time, discussion in Paris will likely move on to ways of neutralizing or reducing the duration of a “sunset clause” in the ECT that allows retrospective lawsuits. Progress on that issue is thought possible by sources close to ongoing legal negotiations on the issue.

“In Europe, drought conditions led to reduced harvests. This was particularly worrying, as it followed a climate-change-fueled heat wave in South Asia that also destroyed crops, and happened at a time when global food prices were already extremely high due to the war in Ukraine,” Friederike Otto, professor of climate science at Grantham Institute in the U.K. and one of the authors of the study, said in a statement. But as the summer of 2022 showed, climate change amplifies seemingly contradictory effects, worsening drought while also dramatically increasing the risks of extreme precipitation events. In addition to drying out soil, increased evaporation rates due to higher temperatures result in higher levels of atmospheric moisture. “Our analysis shows that last summer’s severe drought conditions across large parts of the Northern Hemisphere were fueled by human-induced climate change. The result also gives us an insight on what is looming ahead. With further global warming we can expect stronger and more frequent droughts in the future,” Dominik Schumacher, researcher at ETH Zurich and one of the authors of the study, said in a statement.

“Fortunately, refreezing the poles by reducing incoming sunlight would be both feasible and remarkably cheap, according to new research published Friday in Environmental Research Communications.”

Scientists laid out a possible future program whereby high-flying jets would spray microscopic aerosol particles into the atmosphere at latitudes of 60 degrees north and south — roughly Anchorage and the southern tip of Patagonia. If injected at a height of 43,000 feet (above airliner cruising altitudes), these aerosols would slowly drift poleward, slightly shading the surface beneath. “There is widespread and sensible trepidation about deploying aerosols to cool the planet,” notes lead author Wake Smith, “but if the risk/benefit equation were to pay off anywhere, it would be at the poles.”

Particle injections would be performed seasonally in the long days of the local spring and early summer. The same fleet of jets could service both hemispheres, ferrying to the opposite pole with the change of seasons.
newly designed high-altitude tankers would prove much more efficient. A fleet of roughly 125 such tankers could loft a payload sufficient to cool the regions poleward of 60 degreesN/S by 2 degreesC per year, which would return them close to their pre-industrial average temperatures. Costs are estimated at $11 billion annually — less than one-third the cost of cooling the entire planet by the same 2 degreesC magnitude and a tiny fraction of the cost of reaching net zero emissions.
Smith calls the idea “game-changing” (while also warning it’s “not a substitute for decarbonization”).

Chief among the health consequences of blue light is its ability to suppress the production of melatonin, the hormone that regulates sleep patterns in humans and other organisms. Numerous scientific studies have warned that increased exposure to artificial blue light can worsen people’s sleeping habits, which in turn can lead to a variety of chronic health conditions over time. The increase in blue light radiation in Europe has also reduced the visibility of stars in the night sky, which the study says “may have impacts on people’s sense of nature.” Blue light can also alter the behavioural patterns of animals including bats and moths, as it can change their movements towards or away from light sources.