The modern periodic table, arranged in rows and columns, was first introduced by Dmitri Mendeleev in 1869. At the time, it included the known elements and their properties, but Mendeleev predicted ...

‘I have a dream of walking into a chemistry lecture theatre and seeing two periodic tables – the traditional one and a periodic table in the language of the Gadigal whose land we teach on,’ says ...

The colors of rubies and emeralds are so striking that they define shades of red and green – ruby red and emerald green. But ...

There’s no single method to boil an egg, but a team at the Italian National Research Council’s Institute for Polymers, ...

Copyright 2025 The Associated Press. All Rights Reserved. President Donald Trump signs an executive order barring transgender female athletes from competing in women ...

One in four Texans is raising a child while getting a college degree. For Isabella Mapes, it has meant little sleep and, at ...

The new era of nuclear power generation greater than the force of the Sun has arrived and is ready for deployment. For the ...

Joel Achenbach writes about science and politics for The Washington Post's National desk. He has been a staff writer for The Post since 1990. He started the newsroom’s first online column, Rough ...

In this spot the difference challenge, two identical pictures of kids studying can be seen. Although the two images look identical at first glance, they are not. There are three differences ...

A dawn ceremony marked the beginning of Waitangi Day commemorations at Te Whare Rūnanga Marae on the upper Treaty grounds. Events were also held throughout the country, with hundreds of people ...

Animal Pictures and Facts Learn all you wanted to know about animals with pictures, videos, facts, news, and more. Composite photograph by Joel Sartore, National Geographic Photo Ark ...

Here’s how it works. Space can be a wondrous place, and we've got the pictures to prove it! Take a look at our favorite space pictures here, and if you're wondering what happened to today in ...