Method: Place the egg yolk, mustard, garlic and vinegar in a blender jug or food processor. Blend then slowly add oil, while ...

Step aside, primates and crows. Thanks to new drone footage, killer whales have joined an exclusive club: the short list of animals that make and use tools. Scientists have discovered that southern ...

Orcas off the west coast of North America are grooming each other with kelp, in a rare sighting of marine mammals manufacturing and using tools. For several years, scientists have been keenly ...