The EPA’s new leadership continues to defend last year’s rule that banned most uses of methylene chloride, marking a step towards a ruling on amendments Congress made in 2016 to the nation’s primary ...

These include ethylene glycol, ethers, methylene chloride, lye (sodium and potassium hydroxide), petroleum distillates and pine oil. Oven cleaners can be corrosive to skin and eyes, so it’s vital that ...

Consumer Reports found benzene, a chemical known to cause acute myeloid leukemia, as well as methylene chloride, which is linked to lung and liver cancer after long-term exposure. Makers of the ...

On Earth, helium comes in two stable isotopes. By far the most common is helium-4, with a nucleus containing two protons and two neutrons. Helium-4 accounts for around 99.99986 percent of all the ...

Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.

Two products contained an animal carcinogen, and all the samples contained a probable carcinogen, methylene chloride. See the chart below for the full list of known, probable, and possible ...

Protons sit in the nuclei of all atoms, but they are not fundamental particles: They are made of three quarks held together by the strong nuclear force. The strength of this interaction is ...

First up, what is heavy water? Elements are defined by the number of protons in their nucleus, with hydrogen having one, helium having two, and uranium having 92 protons, for example. The number ...

An experiment bludgeoning special lead atoms with high-speed particles has revealed a shocking surprise. Far from the perfect sphere physicists from the University of Surrey expected to find, the ...

“This approach breaks down space and time into a fine grid, allowing us to simulate how the strong force — the fundamental interaction that binds quarks into protons and neutrons — varies across ...

This is the force that binds quarks and gluons together to form protons, neutrons and other particles generically called hadrons. Theorists use lattice QCD, a computational method for solving QCD ...