Scientists have found a clever way to spot lead using tiny glass holes. They can't see lead directly, so they use a special trick. Here's how it works: they mix lead with some smart DNA bits. These bits react and create a signal. This signal is big enough for the glass holes to notice. The cool part? This method makes the glass holes super sensitive. It's like givin...

Scientists are always looking for better ways to control DNA biosensors. These sensors use DNA to detect specific substances, and they can be made even more sensitive by using something called signal amplification. The problem is, controlling this amplification process can be tricky. That's where external stimuli come in. By introducing a trigger like light, scientis...