At the same time, the plants unable to detect the molecular signature of the caterpillar’s drool were largely ignored by the wasps. They weren’t completely defenseless, though. “There are other papers that show if you knock out all immune signaling, the caterpillars grow twice as big—they get enormous,” Steinbrenner says. This, he suggests, indicates the ..
Tag : Science
When the team returned to the sites, they determined which decorations had been selected from the slush pile and moved to a bower, and whether it came from an urban or rural source. After recording the data, all the original decorations were returned to their bowers. Green glass and red wire A male great bowerbird ..
One way archaeologists learn how ancient people, including Neanderthals, did things is to attempt to do those things themselves, a process called experimental archaeology. Normally, that involves making stone tools, butchering deer, or distilling birch tar. But in a new study, it meant doing very destructive things to teeth from one of the world’s most ..
By early March, a government program director was telling UCAR that he needed to “get this done quickly” and that documentation of the supercomputing center needed to be handed over “yesterday.” Even now, months after the deadline for public feedback on the decision, the government admits it hasn’t fully evaluated the comments it received. “The ..
They also conducted experiments that tracked people’s eye movements and recorded their brain activity as they viewed sets of images—both in the lab and in a gallery. There was more stable integrative brain processing when people looked at real art versus pseudo-art, and the eye movements mapped neatly onto the previously identified topological features, suggesting ..
For animals such as fish and insects that can’t control their body temperature, heat waves could be particularly detrimental. “Changes in air temperature will affect brain temperature,” says Baird. A hotter brain could hinder the functioning of nerves, and that, she says, “might affect sensing, memory, and learning.” Cross section shows band of cells in ..
Stanley Plotkin, 93, was instrumental in developing a number of vaccines over the course of his career. He recently said that he’s “beginning to regret having lived so long—because we’re going downhill.” How could we possibly have gotten here? Maybe we’ve always been here. It turns out that the anti-vaccine arguments currently flooding the Internet ..
Grants meet the culture war The document makes clear what sorts of things might be considered administration priorities and national interest—and they’re largely a war on woke. For example, the Trump administration canceled PEPFAR, a program meant to limit the spread of HIV in Africa; it’s a step that is estimated to lead to hundreds ..
The team also found that the immortality of severed tissues is, to the best of our knowledge, unique to P. fabricii. The researchers conducted comparative experiments on explanted tissues from related sea cucumber species, and none showed equivalent tissue survival. Zombie cucumbers Back in 1951, doctors at Johns Hopkins Hospital in Baltimore took a sample ..
Until recently, however, most evidence linking small sperm RNAs to environmental challenges and subsequent effects in offspring has been correlational. Attempts to pin down causality—by injecting RNAs directly into embryos—have often used far higher RNA concentrations than typically found in sperm. In fact, there was no proof that the RNA fragments even make it inside ..
