We’re just days from NASA’s first launch attempt for the much-anticipated Artemis 2 mission. Here are the key numbers to know as the space agency gets ready to send astronauts around the Moon for the ...

In chemistry, the concept of oxidation numbers is a crucial one for understanding various chemical reactions and compounds. The oxidation number of an atom represents its charge or apparent charge, ...

The Gibbs free energy profiles and reaction pathways of H 2 O 2 generation (a), ethanol formation (b), acetaldehyde formation (c), and acetate acid formation (d). This study not only develops a ...

Diluted hydrogen peroxide is generally safe for loosening earwax and helping it exit the ear. Hydrogen peroxide may cause side effects like skin irritation and vertigo. Always check with your doctor ...

Eeny, meeny, miny, mo, catch a tiger by the toe – so the rhyme goes. But even children know that counting-out rhymes like this are no help at making a truly random choice. Perhaps you remember when ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...

While it’s generally OK to store food in plastic containers labeled with a 1, 2, 4, or 5, you should try to use glass. Plastic marked with a 3, 6, and 7 should be used minimally around food to limit ...

A spray of water microdroplets turns a test strip blue, indicating the presence of hydrogen peroxide. Credit: Credit: Proc. Natl. Acad. Sci. U.S.A. It’s the latest in a series of studies from Zare, ...

One of my favorite anecdotes about prime numbers concerns Alexander Grothendieck, who was among the most brilliant mathematicians of the 20th century. According to one account, he was once asked to ...