Noah's Ark could never have contained them: there are probably about 8.7 million species of living things, the vast majority of them undiscovered, according to what is believed to be the most authoritative estimate ever carried out of the scale of life on earth.

So far, about 1.2 million species, ranging from microscopic insects to the blue whale, the largest living creature, have been described, but it has always been recognised that the true total is very much higher. Previous estimates have ranged from three million, right up to 100 million, but the new figure, based on an innovative analytical technique, dramatically narrows the range of possibilities.

WASHINGTON

President Obama was on the way to Alpha when a plea came for him to be, well, more alpha.

LuAnn Lavine, a real estate agent from Geneseo, a rural town just up the road from Alpha, Ill., the last stop on the president’s Midwestern bus tour, told The Times’s Jeff Zeleny: “Everyone was so hopeful with him, but Washington grabbed him and here we are. I just want him to stay strong and don’t take the guff. We want a president who is a leader, and I want him to be a little bit stronger.”

What’s up? Are he and his advisors morons, or just out of touch? Do they have some secret jobs-related October Surprise that will magically reemploy the 22 percent of Americans who are out of work during the last few weeks of the election? Are they the Chicago Black Sox of politics, determined to throw the race to the Republicans? Psychologist Drew Westen can’t figure it out either, wondering aloud if Obama is sick in the head.

Some ask: Is Obama a Republican?

US Republican presidential hopeful Michele Bachmann gets dates wrong as she stops off in South Carolina on campaign trail

Republican US presidential candidate Michele Bachmann offered a "happy birthday" message to the late singer Elvis Presley even though 16 August is the anniversary of his death.

Bachmann shouted "Happy Birthday, Elvis!" from the stage at a campaign stop at the Beacon Drive In, a South Carolina restaurant famous for its fried food and sweet tea.

The ABC is preparing itself for confirmation that it has lost three veteran newsmen in a helicopter crash in remote South Australia.

Journalist Paul Lockyer, pilot Gary Ticehurst, and cameraman John Bean are believed to have been killed when their chopper crashed near Lake Eyre yesterday evening.

The experienced news crew had been working on news and feature projects in the Lake Eyre region and it is believed their Sydney-based helicopter went down in a remote area about 150 kilometres north-west of Marree at about 7:30pm.

French actor Gerard Depardieu has been accused of urinating in the aisle of a plane as it prepared to take off from Paris on Tuesday, forcing the plane to turn back to its parking spot.

A passenger on the flight said Depardieu, 62, the star of movies such as Jean de Florette and Green Card, appeared to be drunk and insisted he be allowed to use the bathroom during takeoff, when passengers must remain seated.

When he was asked by a CityJet hostess to return to his seat, Depardieu urinated in the aisle, the passenger told French radio station Europe 1 on Wednesday.

farming gas...

THE world has moved into a "new and more dangerous phase" of economic uncertainty because of the European sovereign debt crisis, according to World Bank president Robert Zoellick.

In an exclusive interview with The Weekend Australian, Mr Zoellick said the European economic problems were far more intractable and serious than the US economic problems.

And he worried that the British riots could derail the British budget austerity program.

"I believe what (British Prime Minister David) Cameron is doing in the UK is really necessary. My concern would be if the politics knocked it off course."

Opposition Leader Tony Abbott has sought to clarify his comments about farmers having the right to refuse coal seam gas miners access to their land, now saying it is a matter for the states.

Under law, minerals on private property are owned by the Crown and landholders are required to allow mining companies access for exploration or mining. The states administer the laws and glean royalties from mining.

In a radio interview on Friday Mr Abbott said: "If you don't want something to happen on your land, you ought to have a right to say no."

The 2012 Republican presidential debate in Ames, Iowa, Thursday night was exciting. Really.

Sure, it was a civil discussion between conservatives in nice-looking outfits. And it took place in the most midwestern of midwestern states – Iowans' insistence on maintaining an air of middle-class normalcy is almost fanatical. Still, the two hour-long affair sparkled, thanks to the event's co-host Fox News. If bad news is good news for television ("it bleeds, it leads"), however, then this bit of good news about Fox's performance is sure to be bad news for everyone – including the media organisation itself.

The climate sceptics can finally get excited about the 2012 election: Rick Perry, their candidate of choice, is about to officially throw his hat in the ring.

Perry calls global warming "all one contrived phony mess that is falling apart under its own weight." Unlike many of the other GOP presidential candidates, he hasn't expressed concern about climate change in the past, so he won't have to do any back-pedaling. Notorious climate denier Marc Morano is a big fan: "Based on climate views alone, anyone who is holding their nose voting for Mitt Romney because there's no other viable candidate will now rejoice to have an option with Rick Perry."