 Fox's Carmen Roberts. The drug company Pfizer says an early stage study is encouraging enough to continue development of its once a day weight loss pill. I'm Chris Foster. Fox News. Here's today's STEM tip. Make your selfies look even better with science. Take your pics at golden hour right before the sun sets. The wavelengths made by the atmosphere create a perfect golden light for that beautiful face of yours. Learn more at She Can STEM. A message from the Ad Council.