The researchers first took measurements of lead deposited in three Arctic ice cores every year between 500 BCE and 600 CE using techniques they have reported before. They found that lead emissions ...

A new, two-step strategy for making substituted piperidines offers chemists a more efficient way to make these biologically ...

In the reaction, the nitrene binds to an electron-rich double bond near the existing nitrogen atom. Then the sulfur group ...

Cancer immunotherapy drugs called immune checkpoint inhibitors take the brakes off the body’s immune system, allowing it to ...

In its latest evaluation, the EPA finds unreasonable risks to human health due to noncancer effects—such as skin ...

Some molecules respond to light in a matter of seconds. In the case of this dithienylethene compound, ultraviolet light triggers a ring-forming reaction, turning the colorless solution deep red.

Scientists have discovered they can sculpt diamonds in a furnace burning at about the same temperature as a lit match (ACS Nano 2024, DOI: 10.1021/acsnano.4c12436 ). Carbon atoms on adjacent facets of ...

REC Silicon is shutting a polysilicon plant in Moses Lake, Washington, that has struggled to achieve customers’ quality requirements. The plant is one of only a few in the US that manufactures the ...

An academic journal has retracted a study conducted by researchers with the science services giant Thermo Fisher Scientific ...

Growing up in Salamanca, Spain, Alba Álvarez-Martín saw art taking shape around her—literally. Her father was a sculptor, but she didn’t develop the same artistic skill. Instead, her ...