One of the greatest innovations benefiting public health was regulation. In the pre-FDA “patent medicine” days, there were countless products on the market that ranged from useless to directly harmful. This was a time when you could sell radioactive tonics, cocaine-laced elixirs, and products containing poisons, like turpentine. The sellers of these products made many unsupported claims and preyed disproportionately on the […]
The post Self-Treating with Serious Drugs on the Rise first appeared on Science-Based Medicine.When China's DRO-A and B satellites were launched, their rocket failed to deliver them to their planned orbit. Even worse, the satellites were spinning out of control, unable to properly charge their solar panels. Engineers realized that there was still a way to put them on course again. They executed a series of gravitational slingshots over 123 days, using the Sun, Earth, and the Moon to raise the spacecraft's orbits and put them into their proper trajectory.
The weather gets a little wild and weird on Jupiter. How wild? Spacecraft instruments have measured strong winds, tracked fierce lightning, and found huge methane plume storms rising from deep beneath the clouds. How weird? Think: mushballs raining down like hailstones. They're made of ammonia and water encased in a water ice shell. According to planetary scientists, these mushballs plunge through the Jovian atmosphere. What's more, they probably form on the other gas and ice giants, too.
The evidence is building that the surface of Mars was warm and wet for its early history. But what form did this water take? In a new study, geologists propose that Mars has very similar features to places like Utah on Earth, where precipitation from snow or rain formed the patterns of valleys and headwaters that have been mapped from space. Some of these features would require meters deep of flowing water to deposit large boulders.
Let’s turn the sun into a telescope. In fact, we don’t have to do any work – we just have to be in the right spot.
Studying the Sun is becoming increasingly important as more and more of our infrastructure moves off the surface and into the realm where coronal mass ejections and the solar wind can begin to affect them. Scientists recognize this problem and have started devoting more and more resources to studying the Sun, specifically the "space weather" that might affect us. Recently, one of the newest members of the group of satellites focused on studying the Sun hit a milestone when the Polarimeter to Unify the Corona and Heliosphere (PUNCH) mission took on its first light.
Planetary scientists have plenty of theories about Mars and its environmental past. Two of the most widely accepted are that there was a carbon dioxide atmosphere and, at one point, liquid water on Mars' surface. However, this theory has a glaring problem: Where should the rocks have formed from the interactions between carbon dioxide and water? According to a new paper by scientists at several NASA facilities using data collected by the rover Curiosity, the answer is right under the rover's metaphorical feet.