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“Rearing up, each reveals its two-pronged penis.” Meet the creature that fences with an unusual body part
The animal kingdom is full of bizarre mating rituals – and one of the oddest must surely be the Persian carpet flatworm
It can be seen from space, is the size of Morocco and home to animals found nowhere else on Earth
5.5 million bees found beneath New York State cemetery. It's one of the largest populations ever recorded
Millions of mining bees are living in the soil of Ithaca's East Lawn Cemetery, new study finds
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Fungi may survive extreme conditions of Mars and space, say scientists
New study suggests microbes could survive the long trip to Mars
Just how many species are there? Millions if you count animals, plants and fungi... Here's an estimated guess...
Just how many different species are there? To date nobody has a precise answer - but it doesn't stop scientists trying to work it out...
Which animal has the biggest testicles? Clue... "They're an impressive 14% of its body mass. Imagine if a human's were 14% of its body mass…"
Karim Vahed takes a look at which species has the biggest testicles
Huge manta ray spotted with chunk of body missing. Divers think they know what caused it
Manta rays can sometimes heal from injuries such as shark bites but more serious wounds can be fatal.
How many ways can evolution happen?
Evolution isn’t a single, straightforward process – it works in several distinct ways. From species splitting apart over time to unrelated animals developing similar traits, these patterns reveal how life adapts and changes.
"Giving birth through their narrow clitoris, a female has a birth canal of only about one inch across, making it both painful and risky." 10 craziest animal births ever...
From mouth-brooding fish to tadpoles bursting through their mother’s back, the animal kingdom has some bizarre birth stories
Banana-sized deep-sea oddity glows red – and resembles an alien spaceship
is crimson creature glides through the twilight zone with rainbows dancing up and down its body but to predators it’s invisible
It rains poison, blinds on contact – and its fruit could kill: Inside the ‘Tree of Death'
"It's often infected with a parasite, which can be transmitted to humans. Untreated, it can lead to heart failure, damage to the nervous system and death.."
This is one bug you don't want to be 'kissed' by
Why do cockchafers have such weird, feathery antennae?
It's the size of Gambia and one and a half times deeper than the Grand Canyon – Discover Earth’s most mysterious underwater giant
"With the flex of a muscle, it can produce an arsenal of sharp, curved claws that snap out of its toes like switchblades" 11 weirdest, bizarrest frogs on the planet
Discover the weird and wonderful oddballs from the world of frogs
"Sand pours off and disappears below like an underwater waterfall. This eerie phenomenon looks like a monstrous plume of smoke being dragged down into the darkness"
Plummeting down for more than 200 metres, Dean’s Blue Hole in the Bahamas is one of the world’s deepest blue holes
Nearly as big as Wales, hotter than 50°C – Inside the inhospitable and rugged Death Valley, where not everyone gets out alive - yet inconceivably wildlife thrives
Welcome to one of the harshest, hottest most inhospitable places on Earth
"The only way a female avoids starvation is by being fed by males hoping to mate with her. Females might have up to five males in attendance..."
Often male birds are more colourful than their female counterparts, but the ecelctus parrot bucks the trend, as zoologist and broadcaster Lucy Cooke explains.
Do eggs really need sperm? Can they manage without?
Discover the intricate relationship between eggs and sperm.
"Both are large, heavy, beefy animals with thick skin, pillar-like legs and enormous heads..."
Both are big, intimidating and dangerous at close quarters...
Underwater robot discovered record-breaking creature the size of a car that could be thousands of years old, one mile down in the Pacific Ocean
All you need about the biggest sponge in the world
"The ghostly trunks of a vast forest, submerged for tens of thousands of years, rose out of the sediment. These mighty trees had lived for hundreds of years before their watery grave"
The mystery of 60,000-year-old trees that still smell like fresh incense
10 deadliest, most venomous spiders on the planet: Are these dangerous spiders as fearsome and lethal as their reputation?
Here are the most venomous spiders in the world, but just how deadly are they really?
Are humans still evolving or is this as good as we get?
It’s often said we’ve transcended our biological constraints and stopped evolving, but that’s simply not true…
