GAVNet Collaborative Curation

New high-resolution structures of the bacterial ribosome determined by researchers at the University of Illinois Chicago show that a single water molecule may be the cause-and possible solution-of antibiotic resistance.

The starting point is to note that, for people to be held responsible for their actions, they have to know about certain features of the world. In many cases, even this minimal condition for blameworthiness isn't satisfied. For example, Chow would have struggled to predict that the rise of ridesharing apps would crater the market for taxi medallions in New York City - but so, too, did most of us. By their very nature, technological disruptions are difficult to foresee; if they were easy to predict, early investors in these technologies wouldn't get so rich. Such a low bar for blameworthiness seems too harsh to be plausible; how can any of us be blamed for failing to spot trends that almost no one was able to see, despite the significant material incentives for doing so?

Efforts to track SARS-CoV-2 sequences have helped identify worrying variants - but researchers are blind to emerging mutations in some regions.

In her view, Ancient Greece's blind master storyteller, Homer, and his works, were guilty of "indulging and spreading sexism, racism, ableism, and Western-centrism". She came to the conclusion that canceling the classics seemed to be the most effective way to make sure that today's young generation could not, again in her view, be poisoned by the entirely fictional and mythical "sins" of Odysseus, Menelaus, and Priam.

Our crisis of inertia as revealed by our continuing reliance on cloth masks

A Purdue University-led team of scientists has evidence that tomatoes may be more sensitive to these types of diseases because they've lost the protection offered by certain soil microbes. The researchers found that wild relatives and wild-type tomatoes that associate more strongly with a positive soil fungus grew larger, resisted disease onset and fought disease much better than modern plants.

If you want to understand an ecosystem, look at what the species within it eat. In studying food webs-how animals and plants in a community are connected through their dietary preferences-ecologists can piece together how energy flows through an ecosystem and how stable it is to climate change and other disturbances. Studying ancient food webs can help scientists reconstruct communities of species, many long extinct, and even use those insights to figure out how modern-day communities might change in the future. There's just one problem: only some species left enough of a trace for scientists to find eons later, leaving large gaps in the fossil record-and researchers' ability to piece together the food webs from the past.

BPA is an organic compound made from fossil fuel sources. The industrial chemical has been used to make plastics and resins since the 1950s, and products made with it are cheap to make, clear, flexible and strong. BPA can be found in a variety of products, including water bottles, storage containers and sports equipment. It's also widely used in the linings of food and beverage cans and in sales receipt paper. It's one of the most commonly synthesized chemicals today with more than six million tons created in 2018 alone.

Aerosols are suspensions of fine solid particles or liquid droplets in a gas. Clouds, for example, are aerosols because they consist of water droplets dispersed in the air. Such droplets are produced in a two-step process: first, a condensation nucleus forms, and then volatile molecules condense onto this nucleus, producing a droplet. Nuclei frequently consist of molecules different to those that condense onto them. In the case of clouds, the nuclei often contain sulphuric acids and organic substances. Water vapor from the atmosphere subsequently condenses onto these nuclei.

Analysis by WWF found that just 29 sites across South America, Africa and South East Asia were responsible for more than half of the global forest loss.

Analysis by WWF found that just 29 sites across South America, Africa and South East Asia were responsible for more than half of the global forest loss.

Because thinking minds are different from evolving organisms and self-assembling molecules, we cannot expect them to use the same means-mechanisms like genetic drift and thermal vibrations-to overcome deep valleys in the landscapes they explore. But they must have some way to achieve the same purpose. As it turns out, they have more than just one-many more. But one of the most important is play.