The Apple Watch Series 4 is currently $349 from Amazon and Best Buy. This is $50 less than the usual cost of the wearable, which has a 40mm watchface and GPS capability. If you want the larger 44mm model, it is $379, which is also $50 off of its regular price.

Both retailers offer this smartwatch in several stylings, including space gray, silver, or gold aluminum. Each model comes paired with a specific color of sport band, but you’ll be able to decide between a rubberized option and Apple’s loop band that has a woven look and feel.

The Apple Watch Series 3 is regularly available for around $199, but the Series 4 has a few improvements and new features that might make it a better option for you. It’s faster at managing everyday tasks,…

Continue reading…

NGC 2903 is located about 30 million light-years away in the constellation of Leo (the Lion), and was studied as part of a Hubble survey of the central regions of roughly 145 nearby disk galaxies.

A newly identified epigenetic hotspot for schizophrenia and bipolar disorder may give scientists a fresh path forward for devising more effective treatments and biomarker-based screening strategies. More than 100 million people worldwide have either schizophrenia or bipolar disorder, which are characterized by periods of hallucinations, delusions and irregular thought processes. They are both associated with overproduction of the neurotransmitter dopamine, a key regulator of reward-seeking behavior, emotional responses, learning and movement, among other functions.

A photodetector converts light into an electrical signal, causing the light to be lost. Researchers have now built a quantum sensor that can measure light particles non-destructively. It can be used to further investigate the quantum properties of light.

All the surface of the human body is represented in the cerebral cortex in a transversal band localized at the external part of the cerebral hemispheres: the somatosensory cortex. Each body region occupies in that band a distinct extension depending on its use and sensitivity. For instance, the hands and the lips, on which humans rely most, occupy the largest area. Thus, the 3D representation of that map forms the known sensory homunculus.

Grunting noises in tennis influence the prediction of ball flight, according to sport psychologists.

A new exhibition charts the history of moon photography—just in time for the 50th anniversary of the NASA mission.