Category: Environment
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Silence is elusive
THE Big Bang was spectacularly mis- named, having been “the quietest firework of all time”. Sound waves need matter to propagate through, so the explosion that created it can’t have made a din… This article first appeared in Nature on 4 February 2025. To continue reading, click here.
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Death and the Artic char
TO the east of Amsterdam lies a tract of reclaimed marshland, the site of an epic rewilding project called the Oostvaardersplassen. It is sometimes nicknamed the Dutch Serengeti because of the profusion of large herbivores that graze there. But during the bitterly cold winter of 2017-18, deeply shocking images began to emerge. Thousands of deer,…
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Going viral
FIRST the pharaoh changed his name, from Amenhotep IV to Akhenaten. Then he decreed that a new capital should be built far away from the old one. And in this city, one god should be worshipped, forsaking all others: the sun god Aten… This article first appeared in New Scientist on 19 July 2022. To continue…
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The big idea: should other species have their own money?
ONLY about 120,000 orangutans remain in the wild, and despite the whopping $1bn that has been spent on protecting them since 2000, their numbers continue to decline. The orangutan is the most endangered great ape, but the picture is only marginally less grim for the others – except us, of course – and the trend…
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Deciphering Dumba
A HERD of around 40 elephants processes across open grassland in Mozambique’s Gorongosa National Park. Led by a matriarch named Valente, they are headed towards a newly felled tree, a potential food source. The tree is out of sight: perhaps the elephants detected vibrations from the impact through their feet. That’s cool, and the procession…
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Epigenetics, the misunderstood science
A little over a decade ago, a clutch of scientific studies was published that seemed to show that survivors of atrocities or disasters such as the Holocaust and the Dutch famine of 1944-45 had passed on the biological scars of those traumatic experiences to their children. The studies caused a sensation, earning their own BBC…
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Why the world doesn’t need more babies
FERTILITY rates are falling across the globe – even in places, such as sub-Saharan Africa, where they remain high. This is good for women, families, societies and the environment. So why do we keep hearing that the world needs babies, with angst in the media about maternity wards closing in Italy and ghost cities in…
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Shaping future cities
YOU have probably seen the annual rankings of the world’s cities by “liveability” or “quality of life”. It is intriguing to discover which come out top – and which bottom. After all, most of us have skin in this game: more than half of people around the world live in urban environments, and that number…
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Are there too many people?
IN 2011, when the global population hit 7 billion, economist David Lam and demographer Stan Becker made a bet. Lam predicted food would get cheaper over the next decade, despite continuing population growth. Becker predicted that food prices would go up, because of the damage humans were doing to the planet, which meant that population…
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Time for some home truths about deforestation
TO prevent future pandemics, we must stop deforestation and end the illegal wildlife trade. Do you agree? Of course you do, because what’s not to like? The buck stops with the evil other. The question is, will doing those things solve the problem? And the answer is, probably not. They will help, but there’s another,…