Adding copper strengthens 3-D-printed titanium

Successful trials of titanium-copper alloys for 3-D printing could kickstart a new range of high-performance alloys for medical device, defence and aerospace applications.

Common genetic ancestors lived during roughly same time period

Mitochondrial Eve and Y-chromosomal Adam—two individuals who passed down a portion of their genomes to the vast expanse of humanity—are known as our most recent common ancestors, or MRCAs. But many aspects of their existence, ...

'Death shadow' dinosaur unearthed in Argentina

Argentine paleontologists have announced the discovery of an apex-predator dinosaur that measured three stories from nose to tail and eviscerated its prey with sharp, curved claws.

Fundamental regulation mechanism of proteins discovered

Proteins perform a vast array of functions in the cell of every living organism with critical roles in almost every biological process. Not only do they run our metabolism, manage cellular signaling and are in charge of energy ...

Feathers came first, then birds

New research, led by the University of Bristol, suggests that feathers arose 100 million years before birds—changing how we look at dinosaurs, birds, and pterosaurs, the flying reptiles.

Internet pioneers oppose US online piracy bills

The founders of Craigslist, eBay, Google, Twitter, Yahoo! and other Internet giants expressed concern to the US Congress on Wednesday over legislation intended to crack down on online piracy.

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