Seeds have several advantages over spores: they protect a developing plant embryo, package it with a food supply, and can remain dormant until conditions favor growth. Spores are simpler reproductive units, usually consisting of a single cell, so they can be produced and dispersed in great numbers, but they do not carry the same built-in […]

The sperm whale is often called the loudest animal on Earth, because it produces powerful clicks used for echolocation. But “loudest” depends on what is being measured: some estimates put the pistol shrimp’s snapping sound at a higher peak level close to its source, while the sperm whale’s clicks are among the loudest sounds produced

A stick bug is an insect whose long, narrow body and often twig-like coloring help it blend in with plants. The name usually refers to a walking stick, an insect in the order Phasmatodea, whose members are also called stick insects or phasmids. What a Stick Bug Looks Like Most stick bugs have elongated bodies

Cows come in many breeds, which people have developed for milk, meat, both, or particular environments and farming traditions. The word “cow” strictly means an adult female bovine, but people often use it more broadly for cattle; the main kinds are best understood by their breeds and their roles. What “cow” means Cattle are domesticated

The world’s largest frog is the goliath frog, Conraua goliath, a species native to parts of Central and West Africa. It is the largest living frog by body size, though “largest” can refer to length, mass, or a particular record, so comparisons need a little context. What “largest frog” means In ordinary use, the question

Moths pollinate many flowers, especially blooms that open at night or release their strongest scent after dusk. These often have pale petals and deep, narrow tubes containing nectar, but moths also visit flowers that do not fit that pattern; the plants they pollinate vary by moth species, region, and season. Why moths visit flowers Flowers

The polar bear’s scientific name is Ursus maritimus, a Latin name that means “sea bear.” It is the standard scientific name for the species, used in zoology and conservation writing to identify the animal precisely. What the Scientific Name Means Ursus maritimus combines two Latin words: ursus, meaning “bear,” and maritimus, meaning “of the sea”

Birds do not all prefer one color for a birdhouse, and color is usually less important than a suitable design, safe placement, and the right habitat. For many nesting birds, an unpainted or lightly colored wooden box is a sensible choice; avoid dark finishes that absorb more heat, and use paint only where it is

No single animal is the most useful to the planet: ecosystems depend on many species doing different jobs. Pollinators, soil builders, seed dispersers, predators, and marine animals all help keep natural systems functioning, often in ways that also support people. Why “useful” is a complicated label Animals are not tools with one purpose, and nature

The coconut crab (Birgus latro) is the largest living terrestrial crab. It is also the largest land-dwelling arthropod, and its enormous size, climbing ability, and dependence on the ocean during its early life make it unusual among crabs. Adults live on tropical islands around the Indian and Pacific oceans. Although they spend their later lives