5,519 results
- Chemistry
Building artificial cells from scratch
Scientists have created artificial cells that can live and produce proteins as their natural counterparts do, but can't replicate.
- Humans
From the February 9, 1935, issue
A new type of sailboat, the most distant nebula, and germs on drinking glasses.
- Earth
Nanowaste: Predicting the environmental fate of buckyballs
The potentially harmful effects of buckyballs in aquatic environments could vary depending on the chemistry of the water.
- Earth
Last Gasp: Toxic gas could explain great extinction
Sudden venting of hydrogen sulfide from the deep sea could have caused the largest extinction in Earth's history by poisoning land animals and destroying atmospheric ozone that protects Earth from ultraviolet light.
- Health & Medicine
Kids’ vaccine guards adults too, for now
Serious infections caused by pneumococcus have decreased in both children and adults since the introduction of a childhood vaccine against seven strains of the bacterium, but other pneumococcus strains are now becoming more prevalent among adults with HIV.
- Earth
A Whiff of Danger
Synthetic fragrance chemicals can inhibit the activity of molecules that cells depend on to eject harmful substances.
- Health & Medicine
Persistent Cough: Pertussis rises in young adults and infants
Pertussis, or whooping cough, appears to be rebounding in many age groups, causing long-lasting symptoms in adolescents and adults and threatening the lives of unvaccinated infants.
- Materials Science
Magnetic nanorods on cruise control
Chemists have created miniature engines out of nanoscale metallic rods that propel themselves using chemical energy.
- Health & Medicine
Bacteria Provide a Frontline Defense
Bacteria genetically engineered to secrete microbe-killing compounds can fight disease in mice and rats.
- Earth
PCBs damage fish immune systems
A common Arctic fish can suffer subtle immunological impairments from exposure to polychlorinated biphenyls at concentrations recorded in some remote polar waters.
- Humans
Nobel prizes: The power of original thinking
The 2005 Nobel prizes in the sciences honor a gutsy move, optical brilliance, and chemical crossovers.
- Ecosystems
Ambush Ants: Beware the moldy patch on that branch
Tiny tropical ants build shaggy platforms on plants and hide underneath them, poised to reach out and capture insects that may be far larger than themselves.
