Hot and hazardous conditions are part and parcel of jobs like fire-fighting and iron smelting. But smart electronic systems are helping to reduce that risk. Clever safety wear with built-in sensors keep s tabs on the working environment and the worker .
A new medical breakthrough has now enabled some patients to regain control over their lower extremities with the help of a special probe that is inserted into the bone marrow and powered by an external battery. The electrodes stimulate and reconnect previously dormant nerve pathways and enable the patient to send impulses to their legs, causing them to move again.