How salmon find their way back to their home river

Salmon may use magnetism to get close and smell to find home

Salmon may use Earth's magnetic field to reach the general area of their home river. Once nearby, smell may help them identify the correct river itself. The two senses may work together to guide salmon back to where they were born.

83%

South America lost most of its large mammals

Around 11,000 years ago, South America lost 83% of its large mammals during a major extinction event. That was among the highest rates of large-mammal loss of any continent.

National cuisines were partly chosen and created

In 19th- and 20th-century Europe, writers, governments, cooks and food experts helped decide which food traditions represented a nation. As industrial food production grew, so did interest in cuisines presented as authentic links to the past.

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How salmon find their way back to their home river

Salmon may use magnetism to get close and smell to find home

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