Vaccines are one of our best tools to prevent dangerous diseases, but they come with side effects. So would it be safer not to vaccinate?
Aluminum foil ship floating above ground on sulphur hexafluoride (gas significantly denser than air)
What is dark energy? What is dark matter? Well, if we knew exactly we would have a nobel prize – we know that they exist though. When we So what do we know about those strange things?
Experiment
