Overfishing alters ocean ecosystems, leading to fewer and smaller fish over time. Historically people have often targeted the largest fish for food, like tuna, cod, and salmon. Once overfishing begins, fishermen must spend more time and resources searching for the same fish as they become scarcer, using increasingly powerful technology to find the last hidden fish.
Bumblebees: Gone with the Wind? A Major Disappearance Bumblebees, also known as Bombus terristris, are the pollinating cousins of wasps and hornets. They are the number one pollinator for wild growing plants as well as commercial agriculture; you may have seen them flitting around your Gran's tomato plants on summer evenings, busy at work. However, these popular and beloved buzzing insects that help bring us all kinds of food - from coffee beans to fresh apples - bring alarming news.
Off the coast of Venezuela, we encounter the whale shark - the biggest of all the fish in the ocean. In this clip, a shoal of bait fish are using the whale shark as a protective shield. However, unexpected developments are about to take place when we encounter some yellow-finned tuna
At first glance it looks like a huge bird travelling across the sky. But this is, in fact, a flock of starlings flying in formation at a Somerset nature reserve. The 'fantastic', not to mention appropriate, shape came about due to the threat of a nearby Peregrine Falcon.