Sloth mystery solved: How moths and algae shape this unusual creature's toilet habits

Why sloths descend from the safety of the trees once a week to go to the toilet has baffled scientists - but one specialist thinks he has the answer

Close-up image of a conker and single horse chestnut leaf, which is showing signs of leaf miner damage (Getty Creative)

UK conker trees under threat from alien invading moths as scientists say Britain’s wasps are losing the insect war

Experts say there simply aren’t enough wasps to keep the horse chestnut-munching moths at bay

The chalkhill blue butterfly population has exploded on many of Britain's downs in July

A good year for nature in Britain, despite the cold: After frostiest March for 50 years, summer gave rise to an explosion in wildlife

'We had a wonderful July,' says National Trust specialist. 'The way nature fought back was miraculous; it went into overdrive'

A Crimson Speckled moth

On a wing and a heatwave: Exotic butterflies and moths from the continent colonising UK

Exotic butterflies and moths from the Continent have begun to colonise Britain following the hot summer, the Butterfly Conservation charity reports.

Kingsway Dalston

Mown down: The wildlife toll on UK's roadsides

Our obsession with neatness is harming plants, bees and butterflies

10% of British wildlife at risk of extinction as species show massive decline

Comprehensive study reveals hedgehogs, turtle doves and red squirrels among species seeing biggest falls

Paperback review: The Art of Leaving, By Anna Stothard

Eva Elliott no sooner starts a relationship than she is wondering how to get out of it, and worries that there is something odd about her tendency "to think so often about endings". That's until she meets the dashing barrister Luke, who would seem to offer her lasting happiness. But when an old friend of his, the glamorous Grace, arrives on the scene, Eva feels threatened – and her feet begin to itch once more.

Liber Nauticus is 7-2 for the Oaks despite a laboured win at York

Nauticus finds it far from plain sailing in Investec Oaks trial

If this was supposed to be the preliminary sketch for an Epsom masterpiece, then for now Liber Nauticus remains closer to an oil tanker than a dashing ocean clipper. Nonetheless she finds herself disputing favouritism for the Investec Oaks, bookmakers having taken an indulgent view of the heavy weather she made of her trial here.

Review: Asunder, By Chloe Aridjis (Chatto & Windus)

Cracks appear down at the gallery

The greater wax moth can hear sounds that are 100 times higher than the highest human voice

The moth that made mobile phone companies sit up and listen: Insect with sharpest hearing in the world could revolutionise technology

Greater wax moth is capable of hearing sounds 100 times higher than the whiniest human voice

Monarch butterflies are also believed to use landmarks and scent to find their way while migrating

Mapless monarch butterflies migrate using 'internal compass'

The North American monarch butterfly’s amazing migration, travelling thousands of miles each year from its wintering grounds in Mexico to as far north as the Great Lakes of Canada and back, is done without any internal maps, a study has found.

The Google doodle marks the 366th birthday of Maria Sibylla Merians

Google doodle celebrates life of artist and naturalist Maria Sibylla Merian

The 366th anniversary of the birth of German artist and naturalist Maria Sibylla Merian is celebrated in Google’s latest doodle.

This exotic spider was found in a household fridge in Glenrothes, Scotland

Exotic spider which may have travelled from India found in a fridge in Scotland

It has since been identified as from the wolf spider family

The Monarch butterfly

On a wing and without a prayer – the decline of the monarch butterfly

Out of America: More GM crops mean more herbicides – which destroy the food the insects need for their epic migration

Review: The Red Moth, By Sam Eastland

The saviour of the art of war

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Independent Travel
Pompeii, Capri & the Bay of Naples
Seven Cities of Italy
Burgundy, the River Rhone & Provence
Prague, Budapest and Vienna
Lake Garda
Minoan Crete and Santorini
Prices correct as of 1 May 2015
Fishing for votes with Nigel Farage: The Ukip leader shows how he can work an audience as he casts his line to the disaffected of Grimsby

Fishing is on Nigel Farage's mind

Ukip leader casts a line to the disaffected
Who is bombing whom in the Middle East? It's amazing they don't all hit each other

Who is bombing whom in the Middle East?

Robert Fisk untangles the countries and factions
China's influence on fashion: At the top of the game both creatively and commercially

China's influence on fashion

At the top of the game both creatively and commercially
Lord O’Donnell: Former cabinet secretary on the election and life away from the levers of power

The man known as GOD has a reputation for getting the job done

Lord O'Donnell's three principles of rule
Rainbow shades: It's all bright on the night

Rainbow shades

It's all bright on the night
'It was first time I had ever tasted chocolate. I kept a piece, and when Amsterdam was liberated, I gave it to the first Allied soldier I saw'

Bread from heaven

Dutch survivors thank RAF for World War II drop that saved millions
Britain will be 'run for the wealthy and powerful' if Tories retain power - Labour

How 'the Axe' helped Labour

UK will be 'run for the wealthy and powerful' if Tories retain power
Rare and exclusive video shows the horrific price paid by activists for challenging the rule of jihadist extremists in Syria

The price to be paid for challenging the rule of extremists

A revolution now 'consuming its own children'
Welcome to the world of Megagames

Welcome to the world of Megagames

300 players take part in Watch the Skies! board game in London
'Nymphomaniac' actress reveals what it was really like to star in one of the most explicit films ever

Charlotte Gainsbourg on 'Nymphomaniac'

Starring in one of the most explicit films ever
Robert Fisk in Abu Dhabi: The Emirates' out-of-sight migrant workers helping to build the dream projects of its rulers

Robert Fisk in Abu Dhabi

The Emirates' out-of-sight migrant workers helping to build the dream projects of its rulers
Vince Cable interview: Charging fees for employment tribunals was 'a very bad move'

Vince Cable exclusive interview

Charging fees for employment tribunals was 'a very bad move'
Iwan Rheon interview: Game of Thrones star returns to his Welsh roots to record debut album

Iwan Rheon is returning to his Welsh roots

Rheon is best known for his role as the Bastard of Bolton. It's gruelling playing a sadistic torturer, he tells Craig McLean, but it hasn't stopped him recording an album of Welsh psychedelia
Morne Hardenberg interview: Cameraman for BBC's upcoming show Shark on filming the ocean's most dangerous predator

It's time for my close-up

Meet the man who films great whites for a living
Increasing numbers of homeless people in America keep their mobile phones on the streets

Homeless people keep mobile phones

A homeless person with a smartphone is a common sight in the US. And that's creating a network where the 'hobo' community can share information - and fight stigma - like never before