Hedges and edges help pigeons learn their way around

A study has found that homing pigeons' ability to remember routes depends on the complexity of the landscape below, with hedges and boundaries between urban and rural areas providing ideal landmarks for navigation.

Actin cytonauts at play in the cell

(Phys.org) —Actin "comets" are scaffolds of polymer that various bacteria and viruses construct within cells. Party-crashers, like Listeria or Shigella bacteria, are able to seed structures using special patches of their ...

IBM posts higher 4Q net income (Update)

IBM's fourth-quarter net income grew 6 percent, surpassing Wall Street's expectations even though revenue fell. Its shares fell in extended trading after the results came out—and CEO Ginni Rometty said she's recommending ...

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