Australia’s last native shrew has been officially declared extinct, and it’s a sobering reminder of how human actions ripple through ecosystems. Also For months, eerie scenes have haunted South Australia's beaches dead sea creatures, foam-covered waters, and residents with breathing problems. Now, scientists have found the surprising culprit. A little-known algal species unleashing a powerful neurotoxin. But what triggered this deadly bloom and could it happen elsewhere? 

All to discuss with Dr Ruth Freeman Director of Research for Society For Research Ireland.

With thanks to Repak.