Washington, Apr 4 : Adding to the impressive list of bee qualities, scientists have now found that honeybees go through a metamorphosis in their mid-life and perform different social roles as they age.

Female worker bees work in the hive as they venture into adulthood, and perform tasks like taking care of the baby bees.

However, when they are 2-3 weeks old, almost equal to middle age in human years, they make a major career change and switch to foraging for nectar and pollen.

Washington, Apr 4 : Bristol Palin''s former fiancé and babydaddy Levi Johnston has revealed that Sarah Palin knew he and her daughter were having sex when they lived under her roof.

In a show airing April 6, Johnston tells Tyra Banks: "I''m pretty sure she probably knew. Moms are pretty smart."

While on the show, Levi talked about his sex life on national television, reports People.

However, the show hasn't been received well by the Palin household.

London, Apr. 4: Pakistan is secretly providing intelligence inputs to US forces for carrying out drone strikes against Tehreek-e-Taliban Pakistan (TTP) chief Baitullah Mehsud, a senior Pakistan intelligence official has revealed.

The official said that the United States, after months of persuasion by Pakistan''s military leadership, agreed to carry out strikes on Mehsud’s hideout and terror camps along the ungoverned Pak-Afghan border area.

Washington, Apr. 4 : The US Congress is moving toward imposing benchmarks for providing the Pakistani government with billions of dollars of U. S. military assistance, among them being prohibiting additional U. S. spending on Pakistan''s F-16 jet fighter fleet, which the Bush administration agreed to upgrade.

Lawmakers have argued that the planes are part of Pakistan''s defense strategy against neighboring India but that they have little use in counter-insurgency efforts against al-Qaeda and the Taliban.

Washington, April 4 : An analysis of the inner surface of an 18,000-year-old skull assigned to Homo floresiensis, a species also known as the `hobbit', indicates that this tiny individual possessed a small brain blessed with souped-up intellectual capacities needed for activities such as making stone tools.

The analysis was made by anthropologist Dean Falk of Florida State University in Tallahassee, US.

Washington, April 4 : A new study has suggested that a brilliant burst of gamma rays may have caused a mass extinction event on Earth 440 million years ago, and a similar celestial catastrophe could happen again in the future.

Most gamma-ray bursts are thought to be streams of high-energy radiation produced when the core of a very massive star collapses.