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Current Issues
![COVER False-colored scanning electron microscopy image of carbonate-silica 'flowers,' each about 50 micrometers high. [Credit: Wim Noorduin and Joanna Aizenberg]](/images/science_cover.jpg?version=20130516 "COVER False-colored scanning electron microscopy image of carbonate-silica 'flowers,' each about 50 micrometers high. [Credit: Wim Noorduin and Joanna Aizenberg]")
![ONLINE COVER Influencing Immunity. Ribbon diagram of the mouse toll-like receptor (TLR) coreceptor CD14 (shown). Raby et al. demonstrate that a peptide targeting CD14 enhanced TLR-induced proinflammatory responses and could restore the immune response in cells from immunosuppressed sepsis patients. [CREDIT: C. BICKEL/SCIENCE TRANSLATIONAL MEDICINE]](/images/homepage/covers/trans_med_cover.jpg?version=20130516 "ONLINE COVER Influencing Immunity. Ribbon diagram of the mouse toll-like receptor (TLR) coreceptor CD14 (shown). Raby et al. demonstrate that a peptide targeting CD14 enhanced TLR-induced proinflammatory responses and could restore the immune response in cells from immunosuppressed sepsis patients. [CREDIT: C. BICKEL/SCIENCE TRANSLATIONAL MEDICINE]")
![COVER This week features a Research Article showing that inhibition of NMDA receptor function in the insular cortex may prevent the development of neuropathic pain, which can manifest as painful sensations in response to stimuli that are not normally painful. The image shows an artist's depiction of the insular cortex. [Image: Chris Bickel/AAAS]](/images/homepage/covers/signaling_cover.jpg?version=20130514 "This week features a Research Article showing that inhibition of NMDA receptor function in the insular cortex may prevent the development of neuropathic pain, which can manifest as painful sensations in response to stimuli that are not normally painful. The image shows an artist's depiction of the insular cortex. [Image: Chris Bickel/AAAS]")
Latest News
New Limits Needed on Journal Impact Factors
The misuse of a well-known ranking system for research journals has distorted how scientists are hired and how research is funded and published, Bruce Alberts writes in a Science editorial.
Experts Outline Challenges in International Collaboration
International research collaborations are on the rise, pushing scientists, their institutions and security experts to find new ways to create a safe, productive environment for research.
![Freeman Hrabowski, III speaking at the AAAS 2013 S&T Forum. [Credit: AAAS/Robert Beets]](http://www.aaas.org/news/releases/2013/images/0514_hrabowski_sm.jpg "Freeman Hrabowski, III speaking at the AAAS 2013 S&T Forum. [Credit: AAAS/Robert Beets]")
Carey Lecture: 'Empower More S&E Students'
America needs a national, research-based effort to help more undergraduates complete science and engineering degrees, Freeman Hrabowski, III said in his 2013 William D. Carey lecture.
Science Policy
![Photo: Smoke stacks [Credit: Palmer, Alfred T., Flickr Commons]](http://www.aaas.org/news/releases/2013/images/0513_environment_sm.jpg "Smoke stacks [Credit: Palmer, Alfred T., Flickr Commons]")
Misconceptions Mar Environmental Regulation Efforts
Polarized debate over environmental regulations' effects on the economy are complicating federal efforts to create sound environmental policies, experts said.
Education
New Middle School Curriculum Shows Promise
Preliminary AAAS research suggests that a stronger foundation in chemistry can better prepare students for high-school biology.
International
U.S.-Iran Science Partnerships Improve Public Health
Cooperation between U.S. and Iranian health scientists has led to important health advances for both countries, according to the latest edition of Science & Diplomacy.
Public Engagement
Students Showcase Green Inventions
Eco-friendly egg-washers, waterfall-powered battery-charging stations and other technologies presented at the EPA P3 competition help solve important sustainability challenges.
Special Offer & Highlight
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Highlight: Planetfall
A photography exhibit featuring celestial objects, produced using data from NASA and ESA missions.
View exhibit details »
View exhibit details »
