Hurricane Melissa made landfall in southwestern Jamaica, near New Hope, on Tuesday at 1 pm ET with staggeringly powerful sustained winds of 185 mph. In the National Hurricane Center update noting the precise landfall time and location, specialist Larry Kelly characterized Melissa as an “extremely dangerous and life-threatening” hurricane. Melissa is bringing very heavy rainfall, ..
Tag : Science
In essence, it’s a type of symmetry breaking. Any two processes that act as activator and inhibitor will produce periodic patterns and can be modeled using Turing’s diffusion function. The challenge is moving from Turing’s admittedly simplified model to pinpointing the precise mechanisms serving in the activator and inhibitor roles. This is especially challenging in ..
The sole bright spot is that, as of Monday, the core of the storm’s strongest winds remains fairly small. Based on recent data, its hurricane-force winds only extend about 25 miles from the center. Unfortunately, Melissa will make a direct hit on Jamaica, with the island’s capital city of Kingston to the right of the ..
For millennia, some of the world’s largest filter-feeding whales, including humpbacks, fin whales, and blue whales, have undertaken some of the longest migrations on earth to travel between their warm breeding grounds in the tropics to nutrient-rich feeding destinations in the poles each year. “Nature has finely tuned these journeys, guided by memory and environmental ..
This brings us to the technique being used here. In this case, the researchers placed the antibody genes in a circular loop of DNA called a plasmid. This is enough to ensure that the DNA doesn’t get digested immediately and to get the antibody genes made into proteins. But it does nothing to help get ..
There are three species of bats that eat birds. We know that because we have found feathers and other avian remains in their feces. What we didn’t know was how exactly they hunt birds, which are quite a bit heavier, faster, and stronger than the insects bats usually dine on. To find out, Elena Tena, ..
State-of-the-art methodologies Painting of Napoleon’s army. Credit: Barbieri et al., Current Biology/CC BY-SA Rascovan and his co-authors note in their paper that the 2006 study relied upon outdated PCR-based technologies for its DNA analysis. As for the virus family detected in the Kalingrad dental pulp, they argue that those viruses are both ubiquitous and usually ..
Aiming for LEO … This will be the first flight of Innospace’s HANBIT-Nano launch vehicle, standing roughly 72 feet (22 meters) tall with a diameter of 4.6 feet (1.4 meters). The two-stage rocket is powered by hybrid propulsion, consuming a mixture of paraffin and liquid oxygen. For its debut flight, the rocket will target an ..
This close-up image shows the cut kangaroo bone and a micro-CT image of the surfaces of the cut. Credit: Archer et al. 2025 The world used to be so much weirder Based on the available archaeological evidence, it looks like people first set foot on Australia sometime around 65,000 years ago. At the time, the ..
“All of the pieces that are required to make it viable exist. They’re out there,” Cinnamon told Ars. “We have satellites, we have boosters, we have seekers, we have fire control, we have IFTUs (in-flight target updates), we have inter-satellite links. The key is, all those pieces need to talk to each other and actually ..
