The first microscope -- invented around 1595 -- was only as strong as a magnifying glass.
Look and learn: Entomologists use these simple tools while doing fieldwork.
Look and learn: This insect-collecting tool uses suction.
Look and learn: Scientists use this tool to collect specimens.
Look and learn: This simple technique takes advantage of a natural insect characteristic.
Look and learn: Take a peek at what scientists see through one of these scientific tools.
Look and learn: See how this tool works.
Look and learn: This powerful microscope produces extremely detailed 3-D images.
Look and learn: How do scientists collect detailed genetic code?
A historic South American cruise led to groundbreaking findings about the wild kingdom.
See what kids asked and what the scientist revealed.