feed info

230,036 articles from PhysOrg

Advancing agriculture threatens the livelihoods of forest-dependent people

Forest-dependent people living across the Gran Chaco have been put on the map for the first time. As agribusiness expands into the dry forest on which they rely, the impact of that expansion on them has been difficult to document because their homesteads are dotted over 1 million km2. But now an international team of researchers, including a researcher from McGill University, has used high...

What causes disease outbreaks?

Since 1974, contaminated water has been the most common driver of large-scale zoonotic infectious disease outbreaks, according to new research from the Center for the Ecology of Infectious Diseases (CEID) at the University of Georgia. The next two greatest drivers are unusual weather patterns and changes in the abundance of disease vectors such as mosquitos and ticks.

Using overpasses as shelter from tornado?

Meteorologists and emergency workers continue to contest the popular thinking that waiting out a tornado under an overpass is safe. According to the National Weather Service, doing so could actually increase the risk of death, in part because the wind from a tornado is thought to accelerate as it flows under the overpass, in what's known as the wind tunnel effect.

To better understand speech, focus on who is talking

Seeing a person's face as we are talking to them greatly improves our ability to understand their speech. While previous studies indicate that the timing of words-to-mouth movements across the senses is critical to this audio-visual speech benefit, whether it also depends on spatial alignment between faces and voices has been largely unstudied.

Modeling improvements promise increased accuracy for epidemic forecasting

Accurate forecasting of epidemic scenarios is critical to implementing effective public health intervention policies. While much progress has been made in predicting the general magnitude and timing of epidemics, there's still room for improvement in forecasting peak times, as unfortunately evidenced with H1N1 and COVID-19, when peak times occurred later than predicted.

Parasite that replaces a fish's tongue caught at Texas state park

An unknown person working at Galveston Island Sate Park, Texas Parks and Wildlife, has posted a picture of a unique fish that was caught at the park on Facebook—it has no natural tongue. Instead, it has a tongue made up of a group of parasites known as a tongue-eating louse. In the picture, the fish is held up to the camera with its mouth wide open showing the strange foreign 'tongue' inside.

Florida manatee deaths soar as polluted water kills seagrass

Florida fishing guide and environmental activist Paul Fafeita says a highlight for his charter customers is spotting the manatees that forage for seagrass in shallow waters. It's not so thrilling when they come across the emaciated carcass of a manatee that starved to death.

Breakthrough Listen project releases analysis of previously detected signal

An intriguing candidate signal picked up last year by the Breakthrough Listen project has been subjected to intensive analysis that suggests it is unlikely to originate from the Proxima Centauri system. Instead, it appears to be an artifact of Earth-based interference from human technologies, the Breakthrough Initiatives announced today. Two research papers, published in Nature Astronomy, discuss...

Inter-annual variation affects microbial communities more than detritus input manipulation

Microbes regulate soil carbon and nutrients cycles in terrestrial ecosystems through impacting the decomposition and incorporation of organic matter in soils. While, soil microbial communities are profoundly affected by changes in biotic and abiotic factors as a consequence of global change. How the soil microbial community responds to the inter—annual variations remains unclear.

Report: Affordable policy that could stop fossil fuels causing global warming

Imagine a single policy, imposed on one industry, which would, if enforced consistently, stop fossil fuels causing global warming within a generation. The Carbon Takeback Obligation could do just that. It requires fossil fuel extractors and importers to dispose safely and permanently of a rising fraction of the CO2 they generate, with that fraction rising to 100% by the year of net-zero....

The young plant's pantry does more than just feed it

The endosperm, the tissue surrounding the plant embryo in the seed, has long been perceived as a nourishing tissue that is abandoned once the transition to the seedling is complete. A Swiss team, led by scientists from the University of Geneva (UNIGE), has now shown that the endosperm also plays a key role in the proper development of the seedling after germination. It acts notably on the...