Aoibhinn investigates food sensory perception… Kathriona sniffs out the science of taste… and Jonathan is in Waterford to uncover the hidden secrets of terroir in Irish whiskey!

Kathriona investigates how aligning wind energy with hydrogen production could be key to decarbonising our transport and heating sectors. Aoibhinn meets the scientists who are developing new materials and technologies that could split water to produce emission-free ‘green' hydrogen, and Jonathan checks out the first Irish trials of hydrogen-powered buses!