Hawaiian bees are first on US endangered species list

Seven species of yellow-faced bee native to Hawaii have become the first bees to be added to the US federal list of endangered and threatened species.

Conservationists say the bees face extinction through habitat loss, wildfires and the introduction of non-native insects and plants, according to BBC.

The bees are crucial to pollinating some of Hawaii's endangered plants.

'Flying ivory' hornbill bird gains extra protection

An Asian bird species under threat for its ivory like helmet has gained extra protection at the Cites conference in Johannesburg.

Numbers of the helmeted hornbill have plummeted in recent years as demand soared for the so-called "red ivory" that makes up its bill.

Prized in China the hornbill helmets are worth up to five times the price of elephant ivory.

The moon WAS once part of the Earth

Scientists claim to have finally found proof which shows the moon was created during a spectacular collision billions of years ago.

While the Earth is thought to have formed more than 4.5 billion years ago, scientists believe the moon came millions of years later, after an object the size of Mars smashed into the young planet.

Now researchers say a layer of iron and other material deep in the Earth’s interior is proof the moon formed from the remnants.

Bird flu poses threat to penguins

Scientists are warning of new threats to penguins on Antarctica from diseases spread by migratory birds.

A modern strain of bird flu has been found in penguins living on the snowy continent, although it does not seem to be making them ill, according to BBC.

Conservationists say penguins need better protection through monitoring for new diseases and safeguarding their breeding and fishing grounds.

Black holes could grow as large as 50 billion suns before their food crumbles into stars

Black holes at the heart of galaxies could swell to 50 billion times the mass of the sun before losing the discs of gas they rely on to sustain themselves, according to research.

In a study titled 'How Big Can a Black Hole Grow?', Professor Andrew King explores supermassive black holes at the centre of galaxies, around which are regions of space where gas settles into an orbiting disc.

This gas can lose energy and fall inwards, feeding the black hole. But these discs are known to be unstable and prone to crumbling into stars.

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