Month: October 2019

Testing dishes for the presence of lead (and how to detect gunshot residue)

Uses for lead Lead metal is easy to work with and resists corrosion which makes it a desirable metal for many purposes. However, lead is also very dangerous to your health. Lead is used to create glass-like finish on walls, toys, or dishes. It also acts as a sealer to prevent moisture from damaging surfaces. These properties make it excellent for paint and coatings for walls and dishes. However, breathing in lead-based paint particles from the paint causes lead poisoning. Lead poisoning Lead poisoning occurs when lead enters the bloodstream and binds to enzymes in our body causing the enzymes to lose their critical functionality – everything from digestion to neural processing is impacted by lead poisoning. People suffering from lead poisoning may experience seizures and vomiting as their

An eagle has amazing eyes – it can even see UV light which lets it track an animal by its urine trail.

Eagles are regal, powerful animals. At the top of the bird food chain, they can grow up to 7-foot wide and weigh up to 15 lbs. They can carry their weight (15 pounds) while flying. This lets them carry an animal about the weight of a baby mule deer. Their eyes are extremely powerful, about 3-times more powerful than a human’s eye (their eyesight is about 20/5 vs. 20/20 for a human). An eagle’s eye fills a large portion of its head. Unlike a human, their eyes are fixed – they cannot move their eyes in the eyeball socket. To look around, they must turn their head. When hunting, they swivel their head back and forth looking for prey. Their fixed eye design gives the eye

The shiny cocoons of the orange-spotted tiger clearwing butterfly look like beautiful gold jewels.

No, these golden beauties are not fine jewelry or decorative trinkets. Although they look metallic, they are actually made of chitin, the material that gives some insects their shiny look. And inside these chitin containers, are baby butterflies! The orange-spotted tiger clearwing butterfly (or mechantis polymnia) lives in the jungles from Mexico down to the Amazon forests. They are colorful orange, yellow, and black butterflies, similar to a monarch butterfly, and grow to about 3-inches wide. The shiny golden cocoons they spin contain pupae, the third stage of baby butterfly’s development. Since pupae cannot move and are unable to defend themselves, they often rely on the appearance of their cocoon to deter predators. It is believed that the shiny surface of the orange-spotted tiger clearwing’s cocoon scares