iPhone app helps track climate change

Despite the fact that some of the effects of climate change are still imperceptible to all but the most highly trained eyes, there can be no doubting the alarming picture painted by glacier melt. As these rivers of ice retreat back up the valleys they carved out, so scientists’ knowledge of climate change advances, in turn helping us recognize the signs of a warming world.

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Iraqi foreign minister asks Iran about detained hikers

Iraq’s foreign minister asked for details about three American citizens arrested in Iran during a meeting with Iran’s ambassador in Baghdad last week, Iraq’s Ministry of Foreign Affairs said in a statement. Iraqi Foreign Minister Hoshyar Zebari met with Iranian Ambassador Hassan Kazimi Qummi on Thursday, the statement said.

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Federer powers on as Djokovic crashes out

Five-time Wimbledon champion Roger Federer is through to his 21st grand slam semifinal in a row after crushing big-serving Croat Ivo Karlovic in straight sets on another scorching afternoon on Centre Court on Wednesday. The second-seeded Swiss, who is attempting to win a record 15th major title, will now face unseeded Tommy Haas for a place in Sunday’s final, after the German repeated his Halle final victory over Novak Djokovic by ousting the fourth-seeded Serb in four sets. “It’s difficult against Karlovic because there aren’t many baseline rallies on his serve or mine,” Federer told the BBC after going through 6-3 7-5 7-6 in just one hour and 42 minutes

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Federer: ‘Nadal is only human’

Roger Federer has exclusively told CNN he feels he could beat reigning champion Rafael Nadal at this year’s French Open in Paris, because despite winning the last four tournaments the Spaniard is "only human." The world number two is hoping this year will prove to be a turning point after suffering three consecutive final defeats to Nadal at Roland Garros. “He’s won four straight times here in Paris which shows how tough he is, but if you play him the right way there will be chances, he is only human and we wait for that moment when he is not at his best; hopefully that will be this year,” the Swiss said. The 27-year-old certainly started the right way if he is to mount a succesful challenge, beating Alberto Martin 6-4 6-3 6-2 in under two hours to advance to the second round, setting up a clash with either Jose Acasuso or Santiago Ventura.

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