What Is the Birth Control Sponge? The birth control sponge is a small doughnut-shaped device with an indentation in the middle. It’s made of polyurethane foam that is coated with spermicide ...

But scientists in China have come up with a possible solution: a biodegradable sponge made of squid bones and cotton. A research team from Wuhan University used chitin from squid bones and ...

We use them to clean the dishes we eat off, but your kitchen sponge is a damp, crumb-filled environment that is perfect for bacteria to thrive in. Should you opt for a washing up brush instead?