Please explain: How are diamonds grown in a lab?

Please explain: How are diamonds grown in a lab?

What exactly are lab-grown diamonds and how do they compare with the real thing?  Professors Tracey Rushmer and Rich Mildren explain. A diamond is a solid rock of carbon and the hardest known naturally occurring substance. Because diamonds also have some extraordinary...
Which is better – reading on screens or paper?

Which is better – reading on screens or paper?

Research suggests that reading on screens is a less effective way to absorb and retain information than reading the old-fashioned way, but why? And when so many of us are noticing shortening attention spans, how do we learn to concentrate on books again? In a world...
Will green hydrogen replace diesel fuel?

Will green hydrogen replace diesel fuel?

In the not-to-distant future, green hydrogen promises to replace diesel fuel and nitrogen-based fertilisers – and it’s completely emission-free. But what exactly is green hydrogen? And when will we be able to buy it at the corner store?   More than 200 years have...