For decades, planetary scientists have suspected that ancient Mars was a much warmer, wetter environment than it is today, but estimates of just how much water Mars has lost since its formation vary widely.
Have you ever wondered how to become a scientist? Dr. Debra Fischer answers your question is this short video from the National Science Foundation.
The essential systems that support our daily lives - such as electricity, financial institutions and transportation - are all dependent upon the internet. Building resilience in critical infrastructure is crucial to our national security. This last week of National Cybersecurity Awareness Month (NCSAM) will look at cybersecurity in relation to keeping our traffic lights, running water, phone lines and other critical infrastructure secure.