WHAT IS IT?
The Amazon rainforest is the largest remaining tropical rainforest in the world. It's also the most biodiverse. One in ten of all known species are found here, including many that are endangered and found nowhere else. It's big and it's beautiful, and it's vitally important, not least because it stores vast amounts of carbon, influences rainfall patterns across South America, and affects climate on a much broader scale. In the last 40 years, around a fifth of the rainforest has been felled or burned to make way for cattle ranches and other activities. Now scientists fear it's on the verge of irreparable damage. We lose it at our peril. We need to act now to save one of the world's last true wonders.
WHO LIVES THERE?
People have been living in the Amazon for at least 10,000 years. Ancient settlers cultivated native trees such as the Brazil nut, maripa palm, and cocoa tree, and in time this influenced the rainforest's makeup. The southwestern section, for example, is rich in these species.
When the first Europeans arrived in South America in the late 15th Century, there were about 6.8 million indigenous people living there. The colonists carried infectious diseases, such as malaria and influenza, that killed millions of Amazonians. Thousands more were enslaved or displaced.
Today, around 30 million people live in the Amazon region, of which 2.7 million are indigenous, representing more than 350 different ethnic groups. Most live in indigenous reserves known as 'resguardos' where their lifestyles incorporate a mix of traditional and Western elements. Around 60 tribes, however, live in voluntary isolation, and stick largely to the tried and tested ways of their ancestors.
HOW MUCH BIODIVERSITY IS THERE IN THE AMAZON?
Denne historien er fra March 2023-utgaven av BBC Science Focus.
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Denne historien er fra March 2023-utgaven av BBC Science Focus.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
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COULD MARINE CLOUD BRIGHTENING HELP US FIGHT CLIMATE CHANGE?
The theory behind marine cloud brightening is that brighter or whiter clouds reflect more sunlight back into space.
IS IT SAFE TO RUN EVERY DAY, OR SHOULD I DITCH MY RUN STREAK TO SAVE MY KNEES?
A running streak, where you run every day without taking rest days, can be highly motivating and beneficial for overall fitness. Running is great cardiovascular exercise and isn't to be discouraged (and finding a routine with some consistency is great). Getting a bit of exercise as often as possible is also hugely beneficial for your mental health.
WHAT MAKES THE MEDITERRANEAN DIET SO GOOD FOR US?
The Mediterranean diet may help you live longer, especially if you also adopt the lifestyle of people living near the Med during the 1950s.
WHAT IS MEXICO'S BLUE HOLE?
The world's deepest blue hole (marine sinkhole) lies off the coast of Mexico's Yucatán Peninsula. It's at least 420m (1,378ft) deep, but explorers still haven't found its bottom.
HOW CAN I TELL IF I'VE GOT HIGH CORTISOL LEVELS?
Cortisol is a hormone produced by glands in our bodies called the adrenal glands, which sit above the kidneys. It plays a critical role in various bodily functions, including regulating metabolism, reducing inflammation and helping the body respond to stress. While essential for our health, chronic elevation of cortisol levels can lead to several issues.
THE LUNGFISH
In 1836, European scientists discovered a peculiar animal from the River Amazon that they struggled to identify. Its eel-like body was a few feet long and its air-filled lungs persuaded anatomists it must be a reptile.
ARE WE THE ONLY SPECIES TO HAVE BEEN THROUGH A STONE AGE?
The Stone Age might conjure up images of early humans, sitting around a campfire or hunting prehistoric beasts, but evidence shows that we're not the only species that has learned how to work with stone tools. Wild chimpanzees (Pan troglodytes) use stone tools to crack open nuts.
Should we scrap daylight saving time?
Most of us look forward to the extra hour we get in bed every October, but researchers argue that changing the clocks twice a year harms our health
THE INTERNET OF ANIMALS
SCIENTISTS ARE USING ELECTRONIC TAGS AND SATELLITES TO TRACK WILD ANIMALS AND CREATE A DATA NETWORK THAT COULD HELP US ADDRESS THE BIODIVERSITY CRISIS
MUSIC FOR A DISTRACTED GENERATION
The number of things competing for our attention is often overwhelming. Can dreamy soundscapes created with neuroscience help our bewildered brains to concentrate?
