14 Aug 2024

Science: Landmark HIV trial, 'dark oxygen', paper cut physics

From Nine To Noon, 11:45 am on 14 August 2024
bandage on an injured finger

Photo: 123RF

Science communicator Allan Blackman looks at a trial that's been labelled a "game-changer" in HIV prevention.

It showed a twice-yearly injection of antiviral drug lenacapavir prevented the contraction of HIV in more than 2000 African women.

Scientists had long thought the depths of the Pacific Ocean were a no-light - and therefore no plant-producing oxygen -  zone.

But four km down, they found polymetallic nodules that make "dark oxygen". And physicists have worked out which paper is the worst for shredding your fingers.

Allan Blackman is a Professor of Chemistry, School of Science, Auckland University of Technology