Ocean tides have changed significantly over the last century at many coastal locations around the world, according to a paper in Earth’s Future, and increases in high tide levels and the tidal range were found to have been similar to increases in average sea level at several locations.

Average sea levels are rising but tide levels have undergone little change on decadal time scales, nor will they change much over the next century, so long-term changes in tides are not a concern in computer models trying to predict the effects of rising sea levels.

From 2009 to 2013, ESA’s Planck satellite took measurements of the cosmic microwave background (CMB), radiation that originated approximately13 billion years ago, around 380,000 years after the Big Bang.

Due to the expansion of the universe, this light is still observable today at microwave wavelengths across the entire sky so Planck surveyed the sky to map this ancient light.

One result is that the standard model of cosmology remains an excellent description of the universe, unless the Planck data is combined with other astronomical observations, where several deviations emerge. Are the anomalies due to measurement uncertainties or undiscovered physical correlations, which would challenge Einstein’s theory of gravitation?

Four billion years ago, a young Mars had enough water to bury its whole surface under 400 feet of ocean, but it is more likely that, as on Earth, it pooled. In the case of Mars, it probably formed an ocean occupying almost half of Mars’s northern hemisphere, reaching a mile deep in some places.

This new finding is based on detailed observations of two slightly different forms of water in Mars’s atmosphere. One is the familiar form of water, made with two hydrogen atoms and one oxygen, H2O. The other is HDO, or semi-heavy water, a naturally occurring variation in which one hydrogen atom is replaced by a heavier form, called deuterium. 

A synthetic nasal formulation of the hormone oxytocin reduced caloric intake in healthy men, particularly consumption of fatty foods, after a single treatment, a new study finds. The results, to be presented Sunday at The Endocrine Society's 97th annual meeting in San Diego, confirm those of animal studies showing oxytocin reduces food intake.

Oxytocin nasal spray reportedly lowered the number of calories men consumed at a subsequent breakfast whether they were normal weight or overweight. In addition, the researchers found that oxytocin improved metabolic measures, such as insulin sensitivity, which is the body's ability to successfully clear glucose (sugar) from the bloodstream.

Medical marijuana is proliferating across the country due to the ability of cannabis ingestion to treat important clinical problems such as chronic pain. However, negative side effects and the development of tolerance limit the widespread therapeutic use of Δ9-tetrahydrocannabinol (Δ9-THC), the major psychoactive ingredient in cannabis.

THC's side effects are produced via its actions at cannabinoid CB1 receptors in the brain. Thus, scientists theorized that an agent with similar mechanistic actions, but that activate CB2 receptors instead, may eliminate the unwanted side effects while maintaining an equivalent level of efficacy.

Though 23andMe finally got FDA approval for a test, that is much different than the unvalidated claims about 250 conditions that they used to make. They got a cease and desist letter from the FDA because of their high profile.