Washington, Mar. 17: Alaska Governor Sarah Palin will deliver the keynote address at the annual Senate-House GOP dinner to be held on June 8 at the Washington Convention Center, National Republican Senatorial Committee Chairman John Cornyn (R-Texas) and National Republican Congressional Committee Chairman Pete Sessions (R-Texas) announced on Monday.

Tehran - Tehran said Tuesday it had no knowledge of an Iranian pilotless plane reportedly being shot down by the US military over Iraq.

Foreign Ministry spokesman Hassan Ghashghavi told reporters in Tehran that he was unaware of the "vague report" on the drone that the US claimed to have shot down last month.

A US military spokesman in Baghdad said Monday that US planes destroyed an Iranian drone that had wandered deep into Iraqi airspace.

Washington, Mar 17: Scientists have uncovered where exactly lies the origin of consciousness in the brain.

While some neuroscientists have argued that consciousness may arise from a single "seat" in the brain, the new study has suggested that four specific, separate processes combine as a "signature" of conscious activity.

For the study, researchers analysed the neural activity of people who were presented with two different types of stimuli – one that could be perceived consciously, and the other that could not.

By using the above information, Dr. Gaillard of INSERM and colleagues showed that the four processes occurred only in the former, conscious perception task.

Washington, Mar 17: The Liberation Tigers of Tamil Eelam (LTTE) have been asked to release United Nations staff members and three children, who have been forcibly detained by them for the past one week.

"The LTTE does not respect any international law, or even the rights of human dignity. If the terrorists will kidnap United Nations workers and their family members, the world can better understand how they treat innocent Sri Lankan civilians who are trying desperately to flee the conflict zone and seek safety," Sri Lanka''s Ambassador to the US, Jaliya Wickramasuriya said in a statement released by the embassy on Monday.

Washington, Mar 17: Porn star Jenna Jameson and her boyfriend of two years, Tito Ortiz, have become proud parents of twin boys.

"They're in very good health," her rep told Us magazine.

Washington, Mar 17: British researchers claim that hormone kisspeptin shows promise as a potential new treatment for infertility.

The study, led by Dr Waljit Dhillo from Imperial College London, has shown that giving kisspeptin to women with infertility can activate the release of sex hormones, which control the menstrual cycle.

According to researchers, the study could lead to a new fertility therapy for women with low sex hormone levels.