Flatfish missing links found

Modern flatfish eyes are asymmetrically placed whereas ancient flatfish had symmetrically placed eyes.

Now intermediate forms have been found in fossils,one called Amphistium,the other Heteronectes.

In these fossils,the eyes were slightly asymmetrically placed.

Fertility news;10 July 2008

Doctors have warned that obese men should lose weight after research linked a fall in sperm quality to obesity.

In a study,records of over 2000 men with details of their body mass index attending Aberdeen Fertility Centre were examined.

Obese men produced 60% less seminal fluid and 40% higher levels of abnormal sperm than men with a healthy BMI.

Diabetes can also damage fertility.

Researchers in Brazil are looking into whether stem cells from human teeth is possible.

Some people however believe it is unlikely to work.

Travellers to Africa carrying deadly form of malaria back to Britain

Many travellers to Africa, often africans themselves are not taking antimalarial pills,believing that having malaria in their early years, meant they were immune to malaria

This misconception can be fatal, leading to up to 16 deaths a year in Britain.

Shunk smokers more at risk of psychosis

A study suggests that shunk,a more powerful form of cannabis, is 18 times more likely to psychosis in those who smoke it.

This may be because recently shunk has contained 16-18% THC(Delta-9-tetrahydrocannabinol,a chemical which is held responible for psychotic symptoms.

Enangeered species could be dying out 100 times faster than feared

Some scientists have warned that methods used to predict which species will become extinct are seriously flawed, underestimating the speed of extinction which some species face,which could be months instead of years.

These scientists say that mathematical models failed to take into account such factors as male tofemale ratio and differences in individual reproductive success, these factors can increase the risks of extinction.

gas used in flat-screen tv linked to global warming

A chemical called nitrogen trifluoride used to make flat-screen tvs may be contributing to greenhouse emissions, so Michael Prather of the University of California has warned .

It is potentially 17,000 more potent than carbon dioxide, and if all were released into the atmosphere, equivalent to 67 million tonnes of CO2.

Toshiba Matsushita Display Technology says they used pure fluoride, zero greenhouse gas emissions are claimed.

Pregnant women shouldn't eat junk food, study suggests

The study was carried out on rats.

The study suggests that baby rats whose mothers eat junk food are more at risk of being overweight and prefer to eat junk food.

The baby rats were also more at risk of heart disease and diabetes.