Do you have the correct time?

In October members of the General Conference on Weights and Measurements are voting to change how we keep time on Earth accurate. Currently an additional second, known as a Leap Second, can be added to make sure modern atomic clocks stay in sync with solar time. However, all of this might be about to change as the rotation of the Earth speeds up and interferes with our measurements. Tom takes a trip to meet Principal Scientist Setnam Shemar at the National Physics Laboratory to learn how our time lords keep us all on schedule. Plus, Associate Professor Claire Nichols from Oxford University helps us understand why the Earth's rotation puts our timekeeping in jeopardy.

Also on the show, professor of Mathematical Biology, Kit Yates, has scoured the news to bring us two of the hottest science stories this week. We find out how scientists can tell the body temperature of the Tyrannosaurus rex from fossils, and whether the record has been broken for the warmest temperature complex life – eukariotic cells – can tolerate on Earth.

Our coverage of the Royal Society Trivedi book prize is also heating up as the winner is announced next week. Ahead of the ceremony author, former winner and judge Bill Bryson shares with Tom why he holds the prize in such affection. We also hear from shortlisted author Lise Barnéoud whose book, Hidden Guests, uncovers the surprising science of microchimerism and how some of your cells are not your own.
To discover more fascinating science content, head to bbc.co.uk, search for BBC Inside Science and follow the links to The Open University.

Presenter: Tom Whipple
Producer: Alex Mansfield, Katie Tomsett, and Tabitha Taylor Buck
Production co-ordinator: Jana Bennett-Holesworth
Editor: Ilan Goodman