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168,137 articles from ScienceDaily

An express-lane for the Internet

The Internet is expected to be inundated in the future with billions of gigabytes (or exabytes) of data as high-definition video and other bandwidth-busting downloads become the norm. The cost of upgrading the Internet for this so-called "exaflood" could make Web connections too expensive for most consumers. Internet service providers may be able to keep prices down by opening up an express-lane...

New hormone treatment shows potential to reverse infertility

Twice weekly injections of the hormone kisspeptin may provide a new treatment to restore fertility in some women. The findings show that twice-weekly injections of kisspeptin can lead to increases in the levels of sex hormones, which control the menstrual cycle. This is the first study to show this effect can be maintained over the long term and it may lead to new therapies for women whose...

Keeping up with the neighbors speeds vaccine use

Researchers have conducted an analysis of worldwide use of Haemophilus influenza Type b vaccine (Hib) to determine what factors influenced a nation's adoption of the vaccine. The study found that a nation's eligibility for support from the Global Alliance for Vaccine and Immunization and whether a country's neighbors used the vaccine were major influencing factors in addition to price of the...

As girth grows, risk of sudden cardiac death shrinks

Being skinny confers no advantage when it comes to the risk of dying suddenly from cardiac causes, new research suggests. Scientists found that non-obese heart failure patients -- including overweight, normal and underweight patients -- had a 76 percent increase in risk of sudden cardiac death compared to obese heart failure patients. Normal and underweight patients showed a startling 99 percent...

Environmental and social impact of the 'livestock revolution'

Global meat production has tripled in the past three decades and could double its present level by 2050, according to a major report on the livestock industry. The impact of this "livestock revolution" is likely to have significant consequences for human health, the environment and the global economy, the authors...

Frogs, foam and fuel: Solar energy converted to sugars

In natural photosynthesis, plants take in solar energy and carbon dioxide and then convert it to oxygen and sugars. The oxygen is released to the air and the sugars are dispersed throughout the plant -- like that sweet corn we look for in the summer. Unfortunately, the allocation of light energy into products we use is not as efficient as we would like. Now engineering researchers are doing...

How cells protect themselves from cancer

Cells have two different protection programs to safeguard them from getting out of control under stress and from dividing without stopping and developing cancer. Now for the first time, using an animal model for lymphoma, cancer researchers have shown that these two protection programs work together through an interaction with normal immune cells to prevent tumors. Their findings may be of...

HPV vaccine protects from cancer recurrence

A new study shows that the Gardasil vaccine reduces the likelihood of human papillomavirus-related disease recurring after teen and adult women already have had surgery to remove cancer or certain pre-cancerous changes.

Jaws -- 4 million BC

Palaeontologists have discovered evidence of how an extinct shark attacked its prey, reconstructing a killing that took place 4 million years ago.

Metallic glass yields secrets under pressure

Metallic glasses are potentially useful materials at the frontier of materials science research. They combine the advantages and avoid many of the problems of normal metals and glasses, two classes of materials with a wide range of applications. Scientists used high pressure to probe the connection between the density and electronic structure of a cerium-aluminum metallic glass, opening up new...

New lentil being readied for market

"Essex," a new lentil variety has a lot to offer: high seed yields for growers, nitrogen-fixing bacteria for wheat crops, and a tasty source of protein for consumers to add to soups, salads and other fare.