In 2016, hacked security cameras and PVRs took down the web in the US. One major international bank lost $81 million to cyber criminals. In this climate, skilled hero hackers get paid handsomely to help companies find their weaknesses and stop malicious hackers in their tracks. The Ethical Hacking A to Z Bundle helps you build a lucrative security career with 45 hours of premium instruction, now just $39 at the Popular Science Shop.
Congratulations! So, you've decided to become a better sweeper. Your timing couldn't be better—spring officially began this morning, which makes it a great time to get rid of those winter dust bunnies. And reading this article is your first step towards having cleaner floors. To find the scientifically best way to wield a broom, we spoke with two cleaning experts.
In music, you have scales. In Jiu Jitsu, it's drilling. Most of us just call it practice. Whatever you label it, many believe that greatness, heck even mere competency, requires training a skill well past proficiency. It's continuing to practice your free throw even after you've nailed every shot. It's playing through that song one more time even though you've made no mistakes. Scientists call this training past the point of improvement 'overlearning.' And a recent study in Nature Neuroscience suggests that it might improve performance by altering chemicals in the brain that “lock” in training.
Want to spy on your neighbors from outside? In a similar situation, MacGyver rigs up a distant laser microphone. When a conversation goes on inside a room, it creates vibrations in the air—vibrations that carry to the glass of a window. All a would-be eavesdropper need do is point a laser at the window, aiming the beam so that it bounces off the glass and returns to hit a light-sensitive photocell. The photocell can detect fluctuations in the laser beam—and if you wire that photocell to a speaker, it will translate the window's vibrations back into sound waves.
If you were on the internet this week, as you may have been if you're reading this, then you probably noticed some sites are having trouble loading, and others are not working at all. There's a good reason for that. Well, not a good reason, but a clear, obvious reason: someone is attacking the internet, and they're succeeding.