Listeria is a genus of bacteria with major effects on human health and the environment. Many Listeria bacteria are beneficial, but...

Syphilis is a sexually transmitted infection (STI) of obscure origins, a spotty history and massive impact. In the Renaissance its...

Bdellovibrio predatory bacteria are gram-negative , obligate aerobic bacteria who hunt other gram-negative bacteria to feed on their...

Brownian motion vividly illustrates the appearance of chaos at a microscopic level. This phenomenon, first observed by botanist Robert...

Stylonychia is a fascinating genus of ciliates, a diverse group of active single-celled organisms living in both freshwater and marine...

Heliozoa, or sun animalcules, are remarkable protozoa with bodies of spheres and radiating arms or axopodia. Found in freshwater and...

Iodine (I) is an essential element in biology, industry, science and health. It's known for its intense violet gas and strong odor....

Rotifers live in complex microbial water worlds like ponds. These tiny organisms help maintain the health of aquatic environments....

Lye or sodium hydroxide (NaOH) is a vital part of human history. Also called caustic soda, lye is a white odorless solid. A strong...

Silverpoint is a drawing medium with distinct artistic potential. This delicate and precise medium has a rich history, unique properties,...

Radon (Rn) is part of the noble gas family. Colorless, odorless, and tasteless, radon presents unique characteristics and effects on...

Bacteria are responsible for millions of vital processes hidden from our everyday perception. These single-celled organisms are essential...

Soot is as old as fire. A dark, powder formed by incomplete burning of organic matter, it's used for centuries due to its easy...

Tungsten, also known as wolfram, is a rare and versatile metal. In nature, tungsten is found in ore form, combined with other elements....

The Habsburg Dynasty in history is one of Europe’s most powerful and influential royal families. From origins in the Swiss canton of...

Egg tempera painting is beloved for its luminous quality and durability. This method uses egg yolk as a binding agent for pigments, and...

Fulminating silver is a term applicable to a number of silver base d explosives which "fulminate" or detonate easily and violently,...

Platinum (Pt) is one of the most treasured metals in the world. Known for its durability, rarity and luster, platinum is a symbol of...

The malaria parasite P. falciparum has existed for up to100,000 years. Its numbers rise c. 8000 BCE with the Neolithic Revolution....

Alchemy symbolism is an ancient and fluctuating system of intertwined elements compounded over more than 2000 years. A cornerstone of...