Viruses differ greatly in size, the smallest being about 20 nanometers in diameter to the largest measuring some 400 nanometers across. For reference, a human hair is about 60,000 nanometers in ...

"Introducing the DIY Smiski Keychain – a whimsical and adorable addition to your accessories! Craft your own cute pal that brings smiles wherever you go. Perfect for personalizing your style or as a ...