Dr Alvin Helden was leading a student field trip in Uganda when he spotted the rare leafhopper.
Australian scientists say the spinning object is unlike anything astronomers have seen before.
Security experts say a quantum computing leap could crack open all our secrets - so should we worry?
US physicists confirm that they have achieved a stage in nuclear fusion called "burning plasma".
Astronomers say that a rocket in space since 2015 is hurtling towards the moon where it will explode.
Global warming will alter the areas suitable to grow key crops like coffee, cashews and avocados.
China is promising a greener Winter Olympics, although critics are not sure if it can deliver.