News in Brief
Human cloning to produce stem cells works even with cells from middle-aged or elderly people, scientists report in the June 5 Cell Stem Cell, which appeared online April 17.Last year, scientists described a cloning technique for reprogramming human cells to make stem cells. That technique, known as somatic cell nuclear transfer,...
04/18/2014 - 15:32
In the newsroom, any story about a new scientific method faces an uphill battle. Editors are likely to reject such a story; writers themselves often downplay these stories because they’ve learned that the answer is usually “no.” To those of us who follow science, how scientists do what they do becomes important, and thus worth writing about, only once a new method reveals a novel truth about...
04/18/2014 - 15:30
50 Years Ago
A 17-minute animated movie has been produced, using a cathode ray tube and a movie camera, both controlled automatically by an electronic computer…. The film took two months of research and programming, four hours of computer time, and 2,000 hours of film processing, [at] a cost of about $600 per minute…. The picture is formed on a grid … 184 spots long by 252 spots high. Each spot can be any of...
04/18/2014 - 15:30
Penicillin attacks with a calculated strike, splitting open cell walls. Kanamycin sends a bacterium’s protein assembly line into mayhem. Ciprofloxacin dices a microbe’s DNA into a genetic hash. Like trained snipers, each of these common antibiotics seems to dispatch bacteria with a simple tactic: Target a high-profile molecule crucial to survival and, with a single, clean shot, defeat the whole...
04/18/2014 - 15:00
Guest post by Christopher CrockettNASA’s Lunar Atmosphere and Dust Environment Explorer, or LADEE, mission just ended with a literal bang. Having run out of fuel to safely maintain its orbit, LADEE was purposely steered into a slow, steady nosedive toward the...
04/18/2014 - 14:43
Planetary Science, Astronomy
To a visitor walking down, down, down the white cinder block stairwell and through metal doors into the basement, Building 010A takes on the hushed, mile-long-beige-corridor feel of some secret government installation in a blockbuster movie.It’s not open to sightseers, but it’s far from secret. No jut-jawed military escort leads the way; biologist Shannon Dominick wears a striped sweater as she...
04/18/2014 - 13:55
News in Brief
View the videoAstronomers have discovered a unique pair of stars consisting of a white dwarf, the compact core of a dead star, and the sunlike star it orbits. When the white dwarf passes in front of its companion, as seen from Earth, the white dwarf’s gravity magnifies the other star’s light. The pair represents the first clear sign of a gravitational lens in a binary star....
04/18/2014 - 12:06
Eating processed meat is associated with an increased risk of developing colon cancer in people who have the gene variant rs4143094, researchers report April 17 in PLOS Genetics. One in three people have this altered gene, which is found on the same...
04/18/2014 - 09:00
Busy people like to say that the best time to sleep is when you’re dead. But the best time to sleep is actually when you’re young, a study of fruit flies suggests.Newly hatched fruit files deprived of sleep end up with brain and behavior problems later in life, scientists report in the April 18 Science. “This study is a really...
04/18/2014 - 08:30
Neuroscience, Human Development
Exactly what molecule in a mammal's egg cell talks to sperm to let them wriggle inside has been difficult to identify. In 2005, scientists discovered that sperm carry a protein called Izumo1 that gets them to fuse with an egg. Now, research on mice shows that it's the protein folate receptor 4, or Folr4, on the egg that...
04/17/2014 - 20:00
Cells, Human Development