New biofabrication method creates one scaffold to guide regeneration of multiple tissues

Scientists have taken a major step to address the challenge of engineer tissues organized like native tissues. They have demonstrated a new method to fabricate scaffolds presenting spatially organized cues to control cell behavior locally within one material.

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Nanoparticles wiggling through mucus may predict severe COPD

In a proof-of-concept experiment, researchers say they have successfully used microscopic human-made particles to predict the severity of patients' chronic obstructive pulmonary disease (COPD) by measuring how quickly the particles move through mucus samples. The technique, say the researchers, could eventually help doctors deliver more effective treatments sooner.

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Purple martin migration behavior perplexes researchers

Purple martins will soon migrate south for their usual wintertime retreat, but this time the birds will be wearing what look like little backpacks, so scientists can track their roosting sites along the way. The researchers recently discovered that purple martins are roosting in small forest patches as they migrate from North America to Brazil, an unexpected behavior.

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Tetravinylallene, a small but powerful molecule, synthesized for first time

Many natural compounds used in medicine have complex molecular architectures that are difficult to recreate in the lab. Help could come from a small hydrocarbon molecule, called tetravinylallene, which has been synthesized for the first time by scientists. Tetravinylallene can be used to construct complex molecular frameworks more quickly and with less environmental impact than by using established methods.

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Researchers invent low-cost alternative to Bitcoin

The cryptocurrency Bitcoin is limited by its astronomical electricity consumption and outsized carbon footprint. A nearly zero-energy alternative sounds too good to be true, but as a professor explains, it all comes down to our understanding of what makes transactions secure.

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Black holes and their host galaxies, growing old together

The 'special relationship' between supermassive black holes (SMBHs) and their hosts — something astronomers and physicists have observed for quite a while — can now be understood as a bond that begins early in a galaxy's formation and has a say in how both the galaxy and the SMBH at its center grow over time, according to a new study.

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