Diseases, Conditions, Syndromes

Rio tightens restrictions as COVID surges in Brazil

Rio de Janeiro announced new restrictions Thursday on bars, restaurants and beaches, seeking to contain a surge of COVID-19 that is pushing Brazil's hospitals to the breaking point.

Oncology & Cancer

How genome doubling helps cancer develop

A single cell contains 2-3 meters of DNA, meaning that the only way to store it is to package it into tight coils. The solution is chromatin: a complex of DNA wrapped around proteins called histones. In the 3D space, this ...

Diseases, Conditions, Syndromes

'Take back life': More nations ease coronavirus restrictions

Late-night partying at clubs. Elbow-to-elbow seating in movie theaters. Going without masks in public, especially in Europe and North America: Step by step, many countries are easing their COVID-19 restrictions amid hopes ...

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