IN THIS ISSUE

Los Alamos Firsts

• Server science
  Archive of article preprints revolutionized communication in the scientific community

Articles

• Nanoparticle toxicity testing
  New approach to safety testing for potential health hazards streamlines process
• Greening up fossil fuels with carbon sequestration
  Researchers fight climate change by capturing carbon dioxide and storing it deep underground
• Disposing of nuclear waste in a salt bed
  Ordinary sodium chloride makes for an effective repository for transuranic waste
• Quantum discord
  A distinguishing aspect of quantum mechanics that may be critical to building a quantum computer

Spotlights

• Safer nuclear power
  Alternative fuel rod cladding materials make a Fukushima-type explosion much less likely
• Preventing a pandemic
  Simulations of a flu pandemic show that social distancing can buy valuable time
• Laser clarity
  Laser-induced relativistic transparency benefits accelerators, X-rays, and cancer treatment
• Supermassive black holes from supermassive stars
  Supermassive stars in the early universe gave supermassive black holes a head start