What's up in
Science & Engineering
Physics, materials, energy, robotics, computing, aerospace engineering and space medicine.
Space expanded while ancient light travelled, pushing its source 46.5 billion light-years away
Dark energy may be weakening, contradicting decades of cosmic theory
Pressure drop, not turbine blades, kills salmon passing through hydroelectric dams
Mars astronauts could return with weakened bones, study suggests
Dark matter could have inflated the universe's first supermassive black holes
Test pilot jumped toward space with a dying hand to make history
NASA's astronaut finalists endure hours of psychological tests and grueling team simulations
NASA engineer's blood boiled in vacuum chamber but he walked away unharmed
Icelandic geothermal well hits magma, unleashing tenfold energy gains
Elephant recognizes her own reflection, raising questions about what we owe her
