Baghdad - Iraq will sign a long-term security agreement with the US only if the latter agrees to compromise on Iraqi-proposed amendments, the semi-official al-Sabah newspaper said Thursday.

The Iraqi government had handed the US embassy in Baghdad an amended draft on Tuesday, although both parties had agreed in mid- October that the last draft was final.

The changes proposed by the cabinet would clarify under what circumstances US troops would be answerable to Iraqi law.

Washington, Oct 30 : Chemists at the University of Warwick and the John Innes Centre have uncovered a new signalling molecule, which can unlock hundreds of new antibiotics from the DNA of the Streptomyces family of bacteria.

Researchers have already developed methods to find and exploit new pathways for antibiotic production in the genome of the Streptomyces family and many Streptomyces bacteria are being used industrially to produce current antibiotics.

It has long been believed that the relatively unstable butyrolactone compounds represented by "A-factor" were the only real signal for stimulating such pathways of possible antibiotic production

London, Oct 30 : An international poll has come out with varied results on one of the most debatable questions among scientists— when human life "begins" biologically?

The results come prior to a controversial constitutional amendment next week in Colorado, which will confer legal rights on embryos at the point of fertilisation.

Out of the 650 votes polled in, only 22.7pct of voters selected fertilisation as the point when human life begins.

But, detection of foetal heartbeat scored the highest, with 23.5 pct vote in its favour, and at the third position was implantation of the embryo in the womb lining with 15pct.

London, Oct 30 : The 100-million-dollar Stanford Twenty20 Super Series, which is being described as the biggest deal in English cricket''s history, has reportedly been thrown into doubt after the England and Wales Cricket Board (ECB) announced a review (of the series) as concerns grow over their five-year agreement with Sir Allen Stanford, the financer.

The fallout from an extraordinary week in Antigua is set to cast a shadow over English cricket after Stanford’s behaviour this week alienated the England team and embarrassed the ECB.

It has led to a series of damaging blows for the ECB, with one influential county chairman calling for the resignation of the board''s management, reported The Telegraph.

Washington, Oct 30 : Neuroscientists at Arizona State University have developed pulsed ultrasound techniques that can remotely stimulate brain circuit activity without the need of exogenous proteins or surgically implanted medical devices for the same.

The new study provides insights into how low-power ultrasound can be harnessed for the noninvasive neurostimulation of brain circuits and offers the potential for new treatments of brain disorders and diseases, like traumatic stress disorders, traumatic brain injury and even Alzheimer''s disease.

London, Oct 30 : In the pursuit to create a more ‘life-like’ robot, researchers have created a realistic robot head that can mimic human facial expressions, thus making communication more human-like.

Robotics engineers at the University of Bristol, UK, actually made a copycat robotic head, called Jules, which can mimic the facial expressions and lip movements of a human being.

Jules is an animatronic head produced by US roboticist David Hanson, New Scientist reports.

Honson builds uniquely expressive, disembodied heads with flexible rubber skin that is moved by 34 servo motors.

A video camera picks human face movements, and then maps them onto the tiny electronic motors in Jules'' skin.