Agricultural runoff loaded with fertilizers, sewage pollution and rising sea temperatures have all added to the regularity of algae blooms in the sea. These toxic ‘red tides’ affect multiple areas around the US, with Florida being particularly heavily impacted. Slip on a pair of Kurt Geiger sandals and you'll be ready to slink around the British capital – or any town, for that matter – with a beaming smile. We've chosen some of our favourites from the maker's coveted London line, so expect vibrant designs with a huge dose of metropolitan panache. Pond scum. It’s the kind of thing you’d call your worst enemy when no other description could communicate just how ‘eugh’ you find them. That layer of slimy green on the water surface forms from an explosion of algae growth in the water, fuelled by an imbalance of nutrients.