Heating accounts for nearly half of the global energy demand, and two-thirds of that is met by burning fossil fuels like natural gas, oil, and coal. Solar energy is a possible alternative, but while we have become reasonably good at storing solar electricity in lithium-ion batteries, we’re not nearly as good at storing heat. To ..
Tag : Science
This is important because it means these rocks were less likely to have been altered in a hydrothermal environment, where scalding hot water was temporarily released by melting ice caused by volcanism or a meteorite impact. Instead, they appear to have been altered under modest temperatures and persistent heavy rainfall. The authors found distinct similarities ..
It was the image that launched a cultural icon. In 1967, in the Northern California woods, a 7-foot-tall, ape-like creature covered in black fur and walking upright was captured on camera, at one point turning around to look straight down the lens. The image is endlessly copied in popular culture—it’s even become an emoji. But ..
John Honeycutt, chair of NASA’s Artemis II mission management team, said the decision to relax the safety limit between Artemis I and Artemis II was grounded in test data. “The SLS program, they came up with a test campaign that actually looked at that cavity, the characteristics of the cavity, the purge in the cavity ..
“Imagine a snowplow driving along a highway, and lifting up the plow. It leaves a clump of snow behind,” he adds. “That same sort of idea is what left the clump of cold classicals behind. That is the kernel.” In other words, Neptune tugged these objects along with it as it migrated outward, but then ..
But the key finding was that it could synthesize a sequence that base-pairs with itself, and then synthesize itself by copying that sequence. This was horribly inefficient and took months, but it happened. Throughout these experiments, the fidelity averaged about 95 percent, meaning that, in copying itself, it would make an average of two to ..
The Ariane 64 flew with an extended payload shroud to fit all 32 Amazon Leo satellites. Combined, the payload totaled around 20 metric tons, or about 44,000 pounds, according to Arianespace. This is close to maxing out the Ariane 64’s lift capability. Amazon has booked more than 100 missions across four launch providers to populate ..
Pad 40 has been the primary Falcon 9 launch site for most of the rocket’s history, while Pad 39A provided a location for crew launches and an augmentation to support SpaceX’s growing launch cadence. But there are signs the Falcon 9 launch cadence, which reached 165 missions last year, may be peaking as the company ..
Today’s executive order takes a different route to propping up coal: artificially inflating demand. “The Secretary of War, in coordination with the Secretary of Energy,” the order reads, “shall seek to procure power from the United States coal generation fleet by approving long-term Power Purchase Agreements, or entering into any similar contractual agreements, with coal-fired ..
A nutrient-rich natural fertilizer Now Bongers has turned his attention to analyzing the biochemical signatures of 35 maize samples excavated from buried tombs in the region. He and his co-authors found significantly higher levels of nitrogen in the maize than in the natural soil conditions, suggesting the Chincha used guano as a natural fertilizer. The ..