Tadalafil kept muscle precursor cells multiplying, but delayed their transformation into mature muscle fibers.
A startling date reveals the strange, complicated lives of dogs in an empire before the Incas.
Naturalists thought they'd found a spider killed by a parasitic fungus. Then it moved.
Scientists discovered that psilocybin can make one of nature's most aggressive fish surprisingly mellow.
Tiny mushroom peptides could help food taste salty without adding more sodium.
Clay tablets reveal why schoolwork doubled as worship in ancient Babylonia.
New experiments reveal a sophisticated posture-control system hidden inside living wood.
A million-person study points to repeated heat injury in the oesophagus.
Children with ADHD showed more erratic pupil responses, a pattern that shifted with medication.
The small trial suggests some of creatine’s muscle benefits may not require structured training.
A small trial hints that redesigning staple foods could make better nutrition easier.
The secret to Bennu’s astonishing fragility may be the dust it does not have.
A yeast-based material turns Mars’s hostile environment into part of the construction process.
GPS collars reveal hyenas retreating while male lions repeatedly close the distance.
A viral video shows sprinklers soaking a green lawn outside a denver data center during severe water restrictions.
From fireflies to mammals, evolution may have tuned communication to the rhythm of neurons.
The event exposed a hidden weakness in systems that depend on precise positioning.
It's some striking military technology.
Archaeologists reidentify a room once thought to be a shrine as a rare Roman library. 
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