Unmanned helicopters could soon be a key part of emergency relief operations, as well as bringing a new dimension to filmmaking, thanks to innovative work done by European researchers.

When natural disasters happen one of the first casualties is often the communications network. As a result, rapid response crews can be working virtually blind, cut off from each other and the victims they are trying to help. Where there are transport arteries, such as roads, rivers and railways, they are also very often damaged or disrupted, which makes getting medical and relief supplies to survivors extremely difficult.

When such disasters happen in remote areas with little in the way of communications or transport infrastructure to start with, the problem is exacerbated. A solution for both the communications and delivery of supplies problems is now being researched in an EU-funded project, called AWARE, which comprises academic and commercial partners from five European countries.

Humans have a built-in weapon against HIV, but until recently no one knew how to unlock its potential. A study published in Nature reveals the atomic structure of this weapon, an enzyme known as APOBEC-3G, and suggests new directions for drug development.

APOBEC-3G is present in every human cell. It is capable of stopping HIV at the first step of replication, when the retrovirus transcribes its RNA into viral DNA.

The study's authors, led by Xiaojiang Chen of the University of Southern California, were able to show the atomic structure of the active portion of APOBEC-3G.

The Internet is a powerful resource can may help patients make informed treatment decisions but the quality of the content on health-related Web sites is not rigorously monitored and studies have shown that some Web sites present inaccurate information.

More than 110 million adults in the United States have searched online for health information, and two-thirds of these patients seek information through a search engine rather than directly accessing a specific Web site, so helping people to gain an understanding of which types of sites will be most reliable has a great deal of benefit.

LBG J2135-0102 (also known as the "Cosmic Eye" due to its morphological similarity to the Egyptian "Eye of Horus") was discovered from a Hubble Space Telescope (HST) image in an effort to survey high redshift galaxy clusters. This galaxy is a typical star-forming galaxy at z=3 (seen when the Universe was only two billion years old) which has been gravitationally lensed by a factor 28x by a foreground galaxy cluster. The discovery paper can be found in Smail et al. (2007) ApJL 654 33 , whilst the detailed lens modelling used to correct for the lensing distortion is available in Dye et al. (2007) MNRAS 379 308.

This Cosmic Eye has given scientists a unique insight into galaxy formation in the very early Universe.

The rapidity of ejaculation in men is genetically determined, according to research by Utrecht University Neuropsychiatrist Dr. Marcel Waldinger and Pharmacological Researcher Paddy Janssen.

The participants in the study by Waldinger and Janssen were 89 Dutch men who suffer from the primary form of premature ejaculation, in other words, men who always had this problem. A control group of 92 men was also studied. For a month the female partners used a stopwatch at home to measure the time until ejaculation each time they had intercourse.

Supercomputer simulations of dusty disks around sunlike stars show that planets even as small as Mars can create patterns that future telescopes might detect.

Much of the dust in our solar system forms inward of Jupiter's orbit, as comets crumble near the sun and asteroids of all sizes collide. The dust reflects sunlight and sometimes can be seen as a wedge-shaped sky glow -- called the zodiacal light -- before sunrise or after sunset.

The computer models account for the dust's response to gravity and other forces, including the star's light. Starlight exerts a slight drag on small particles that makes them lose orbital energy and drift closer to the star.