2,460 results
2,460 results for: mutations
- Ecosystems
One-Celled Socialites
A wave of research on the social lives of bacteria offers insights into the evolution of cooperation and may lead to medical breakthroughs that neutralize virulent bacterial strains.
- Paleontology
Flightless Feathered Friends
New finds of fossil penguins, as well as analyses of the characteristics and DNA of living penguins, are shedding light on the evolution of these flightless birds.
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DNA Bar Codes
Scientists are using a small piece of DNA as a molecular bar code, a unique identifier to separate organisms into species.
- Humans
Science News of the Year 2004
A review of important scientific achievements reported in Science News during the year 2004.
- Tech
Frankenstein’s Chips
As evidence mounts that drug-safety trials can miss dangerous effects, scientists are building living, miniature models of animals and people to enhance drug and chemical tests.
- Math
Life on the Scales
A mathematical equation helps explain life processes on all biological scales, from molecules to ecosystems.
- Math
Manuscripts as Fossils
A new mathematical model estimates how many medieval manuscripts have survived to the present.
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Code of Many Colors
Researchers have yet to find markers for race in the genome, but understanding the biology underlying perceptions of race could have dramatic social and personal consequences.
- Materials Science
Something to Chew On
Researchers are closer than ever to making synthetic enamel to improve dental implants and perhaps to grow a whole tooth from scratch.
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Learning to Listen
Disparate groups of creatures, including bats, toothed whales, and birds, have evolved biological sonar that they use to track prey, but other creatures have evolved ways to detect this sonar and thereby increase their odds of survival.
- Health & Medicine
Striking a Better Bargain with HIV
Because a drug frequently used to block the transmission of HIV from mother to infant may have negative consequences for the mothers, researchers are looking for inexpensive treatments that will benefit both mother and child.
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Sound Off
By using bits of RNA to eliminate the effects of selected genes, scientists are developing new ways to study gene function and treat diseases.
