Different atoms and ions possess characteristic energy levels. Like a fingerprint, they are unique for each species. Among ...

A huge bar of iron has been discovered lurking inside the iconic Ring Nebula. The structure is enormous, spanning hundreds of ...

Plants have an extraordinary ability to sense tissue damage and quickly rebuild their protective outer layers, a process vital for survival amid environmental stresses. The periderm—a specialized ...

This first newsletter of the new year looks at some of the big questions we hope will be answered in the next 12 months, across film, TV, music and games Don’t get The Guide delivered to your inbox?

The generation of femtosecond optical pulses 1 has opened up a range of applications from real-time monitoring of chemical reactions through to ultrahigh-bit-rate optical communications 2, and has led ...