The risk of humans triggering catastrophic change in unstable Earth systems is largely ignored, a climate scientist says.
Door open for silicon replacement
A breakthrough in the way scientists make crystals could lead to a replacement for silicon as the basis for making chips in electronic devices.
GCSEs: What the statistics show
BBC education correspondent Mike Baker looks at what the GCSE figures reveal - and what they do not.
Good to see Maths as the most popular GCSE subject - speaking as a maths geek :)