This week Allan is in studio with James and Aneeka to discuss some good ol physics, along woth chats about peanut butter and celery at the start of the show.

Dear Science starts of by talking about the second and how long it actually is, becuase as James and Aneeka find out, it can get pretty damn accurate.

Allan then heads onto the next physics topic for the day, gravity. While there are lots of forces, Allan explains how some scientists have measured the gravitational pull of small golden balls.

This week finishes off with a bit of history in realtion to last week and the NASA helicopter. Allan talks about how the Wright brothers weren't the first to fly, instead it was Richard Pearce, a kiwi down south.