A popular Instagram post falsely claims “over 1,100 people died from reactions to the [flu] shot” in 2018, and suggests that the immunization gave some children polio. The flu vaccine cannot give anyone polio and there is no evidence to support the 1,100 figure.
President Donald Trump has repeatedly criticized energy-efficient lightbulbs, saying that the bulbs people are “being forced to use” are more expensive, contain hazardous gases and give off light that’s “not as good” as incandescents. Experts, however, say that’s an outdated and inaccurate description of the current technology.
In a July 31 television interview, Democratic presidential candidate Marianne Williamson inaccurately implied there might be a connection between vaccines and higher reported rates of childhood chronic diseases. She is correct that reported rates of chronic conditions in kids have increased over the last several decades, but there is no scientific evidence to suggest vaccines are the cause.
Q: When is the human heart fully developed, and when are heartbeats audible during pregnancy?
A: A developing heart has all of its primary structures after about nine weeks of pregnancy. Some forms of ultrasound can detect cardiac activity in an embryo in the sixth week, but a heartbeat wouldn’t be audible until about 10 weeks on a Doppler fetal monitor.
President Donald Trump has repeatedly questioned the economics of wind energy, saying that wind “doesn’t work” without subsidies. Experts have differing assessments of that. By some metrics, wind power is already competitive with fossil fuels without subsidies. But other measures don’t come to the same conclusion.