Symptomatic COVID-19 cases in children are uncommon and their clinical course is relatively mild. In particular, infected children displayed non-specific lung findings on chest image studies, and rarely required respiratory support or ICU care. Notably, some pediatric cases persistently test-positive on rectal swabs in addition to a positive nasopharyngeal test.

A new record of past sea-level change for 3 million years ago when the global climate was 2 degrees warmer and the implications for ice sheet response in the current warming climate.

Neonicotinoids kill beneficial insects when they feed on honeydew. Honeydew is the excretion product of phloem-feeding hemipteran insects such as aphids, mealybugs, whiteflies, or psyllids. This route of exposure is likely to affect a much wider range of beneficial insects and crops than contaminated nectar and should be included in future environmental risk assessments of neonicotinoids.

In many types of heart disease, cardiac tissue exhibits excessive extracellular matrix deposition, and fibrosis. This increases the stiffness of the heart, limiting its pumping capacity. By administering specially designed immune cells, which remove the cells responsible for fibrosis, we are able to diminish the quantity of fibrosis greatly.

High mountains around the globe have long been thought to represent pristine ecosystems that have been reshaped by humans quite late in the earth's history. The recent discovery of a 47-31 thousand-year-old residential site at 3,500 m in the Ethiopian Highlands contradicts this view and highlights the early expansion of Middle Stone Age hunter-gatherers into the cold and glaciated mountains.

Hidden from the eye, plant roots interact with a diverse community of microorganisms living around them. These interactions can have a considerable effect on the health and growth of the plant. Still, our knowledge of how plants modulate them is limited. This study looks at root-specific metabolites, showing some can affect the composition of root-microbiota.