Children exhale significantly fewer potentially infectious particles than adults -- at least this is true for the small respiratory droplets that are predominantly produced in the lungs.
New study models the transmission of foreshock waves towards Earth
As the supersonic solar wind surges towards Earth, its interaction with our planet's magnetic field creates a shock to deflect its flow, and a foreshock filled with electromagnetic waves. How these waves can propagate to the other side of the shock has long remained a mystery.
Infant gene therapy is a breakthrough for Artemis-SCID patients
Ten young children born without functioning immune systems and lacking the ability to fight infections are on track for healthier lives thanks to a new gene therapy treatment.
Climate impacts are increasing; textbooks aren’t keeping pace
A new study finds biology textbooks have done a poor job of incorporating material related to climate change. For example, the study found that most textbooks published in the 2010s included less information about climate change than they did in the previous decade -- despite significant advances in our understanding...
Wildfire threats not commonly disclosed by US firms despite risk to economy
U.S. firms rarely report their wildfire risks in required federal filings and instead bury such risks in nonspecific risk disclosures, according to new research.
Metabolic hack makes ocean algae more resilient to 21st century climate change
Scientists provide clear evidence that marine phytoplankton are much more resilient to future climate change than previously thought.
The physical intelligence of ant and robot collectives
Researchers took inspiration from ants to design a team of relatively simple robots that can work collectively to perform complex tasks using only a few basic parameters.
The other paleo diet: Rare discovery of dinosaur remains preserved with its last meal
Microraptor was an opportunistic predator, feeding on fish, birds, lizards -- and now small mammals. The discovery of a rare fossil reveals the creature was a generalist carnivore in the ancient ecosystem of dinosaurs.
How nerve and vascular cells coordinate their growth
Nerve cells need a lot of energy and oxygen. They receive both through the blood. This is why nerve tissue is usually crisscrossed by a large number of blood vessels. But what prevents neurons and vascular cells from getting in each other's way as they grow? Researchers have identified a...
Ammonium is the secret ingredient in stable, efficient, scalable perovskite solar cells
A new pathway to creating durable, efficient perovskite photovoltaics at industrial scale has been demonstrated through the first effective use of lead acetate as a precursor in making formamidinium-caesium perovskite solar cells.