From anglerfish to vampire squid, here are 5 creative deep-sea costume ideas for your Halloween party. Each comes with science-backed facts to entertain and educate our friends!

From protecting the ozone layer to safeguarding the High Seas, international treaties are how nations agree on shared rules. But how does a global agreement actually happen? Here’s a step-by-step explainer.

What is the Global Plastics Treaty? We're explaining how nations are negotiating to end plastic pollution and why agreement has proven tough so far.