ScholarTools

BBC News - Science & Environment

1. Scientists detect biggest explosion since Big Bang
   The blast in the Ophiuchus galaxy cluster left a cavity 15 times bigger than our Milky Way galaxy.
2. Greta Thunberg: Who is the teenage climate change activist?
   The Swedish teenager started a climate change protest that grew into a global movement of millions.
3. Road schemes may face Heathrow-style court action
   Environmentalists could try to block new road plans if they fail to take climate targets into account.
4. Leap years and why we need them
   It's a leap year which means there's an extra day in the calendar - 29 February 2020. But why do we need it?
5. Climate campaigners win Heathrow expansion case
   Campaigners say plans for a third runway should be cancelled, but the airport says it will appeal.