As surface water diminishes in the Western US, people are drilling deeper wells – and tapping into older groundwater that can take thousands of years to replenish naturally.
David Yong, Australian National University and Gary Da Costa, Australian National University
The discovery of an ancient star in the Milky Way’s halo is providing evidence for another source that would have produced the galaxy’s heavy elements.
Pictured is a slag pile at Broken Hill in New South Wales. Slag is a man-made waste product created during smelting.
Anita Parbhakar-Fox
Manufacturing minerals is an expanding field of study. Making more of them could help alleviate various pressures faced by our growing population. But how are they made, and where can they be used?
Artists Damon Kowarsky and Hyunju Kim produced a series of 51 artistic interpretations of elements from the Periodic Table.
From heavy metal to lighter than air gas, these elements and others from the Periodic Table are transformed into artworks that go on display from today.
Titanium is used in knee and hip replacements.
Monstar Studio/Shutterstock
A particle physicist explains just what this keystone theory includes. After 50 years, it’s the best we’ve got to answer what everything in the universe is made of and how it all holds together.
New heavy nuclei are constantly generated in stars and other astronomical bodies.
Erin O’Donnell
People long assumed all the elements we see now were created during the Big Bang. But on May 2, 1952, an astronomer reported spotting new elements coming from an old star and changed our origin story.
Fill a tank with water, sugar, and old mobile phones. Add bacteria and stir. Result? Rare earth metals. This is biomining, and it’s the way of the future.
It turns out that the world is about 4,600,000,000 years old. That’s 4.6 billion years. That’s pretty old!
Marcella Cheng/The Conversation
The world is made of tiny building blocks called ‘elements’. Scientists have worked out how fast some elements change into other elements. That gives us a very big clue about how old the Earth is.
The comet 67P/Churyumov-Gerasimenko, seen up close.
ESA/Rosetta/NavCam
Dust can be instructive. The analysis of those collected around the comet 67P/Churyumov-Gerasimenko provided new information on the history of the solar system.
The precious metal is literally extra-terrestrial, produced in the heart of the stars. How and under what conditions? Scientists know more thanks to a double astrophysical observation.
A laser beam (yellow) causes a path of red fluorescence in a rare earth crystal.
Stuart Hay, ANU
Rare earth elements aren’t actually that rare - but they certainly are useful. Erbium is used right now in the internet’s optical fibre network, and could one day be applied in quantum networks.
Illustration of hot, dense, expanding cloud of debris stripped from the neutron stars just before they collided.
NASA's Goddard Space Flight Center/CI Lab
Until the recent observation of merging neutron stars, how the heaviest elements come to be was a mystery. But their fingerprints are all over this cosmic collision.
Boron is often ignored, but it’s got a lot of important qualities.
David Ellis/Flickr
The periodic table is one of the classic images of science that is found in labs as well as on t-shirts, mugs, even set to music. But what exactly is the periodic table?