A closer look

Building a digital nose from scratch is ridiculously difficult, so engineers just decided to hijack the biological hardware of bugs. By implanting tiny electrodes into the olfactory antennas of live locusts, biohybrid platforms tap directly into the insect's brain waves. When the cyborg bug smells a specific chemical vapor—like a bomb—its brain signals spike, turning a humble garden pest into the ultimate bomb-sniffing drone.