This year, Aoibhinn, Jonathan and Kathriona are in the skies and underground, across Ireland and Europe, investigating the topics that are impacting on all our lives: the alarming rise of antimicrobial resistance; the latest work to capture and even recreate the awesome power of the sun; the gene therapies that could provide the answer to disease in humans, plants and animals; the secrets under the earth's surface that threaten but also sustain our way of living; the technology that could communicate thoughts; and the drones that are helping to save lives!