Evolution

Where birds came from

Most species in the tropics emerged in extreme environments, such as deserts and mountains, before establishing themselves in other biomes

Pterosaur precursors

A new study suggests that a group of small extinct ground-dwelling vertebrates, called lagerpetids, were the closest relatives of these mysterious winged reptiles

Could these be the precursors of pterosaurs?

Study suggests that extinct small terrestrial vertebrates, the lagerpetids, were the closest relatives of those mysterious winged reptiles | 6'43

The advanced brain of a primitive dinosaur

The brain of a well-preserved specimen of Buriolestes schultzi, one of the oldest known dinosaurs, has been reconstructed using computed tomography, suggesting an unusual evolutionary path for one of the most important lineages of this extinct group of reptiles: the sauropods

Two species of mata-mata

New analyses have revealed that there are at least two species of mata-mata

A dose of Darwin in taxonomy

New method of classifying living organisms favors evolutionary history and abandons the divisions of the Linnaean system

Research during quarantine

Carlos Guerra Schrago: The theory and practice of evolution

The discipline that seeks to reconstruct the histories of species is itself evolving, according to UFRJ biologist

A giant tortoise

The largest freshwater turtle that ever existed, possibly the largest of all turtles, lived between 13.8 million and 5.3 million years ago in South America, inhabiting a larger area than previously thought

Why females live longer

The difference in lifespan between the two sexes, the researchers noted, is not due to different aging rates

The extinct manatee of Rondônia

Newly discovered species lived in the Madeira River region 45,000 years ago

Diaspora 2.5 million years ago

Chipped stone artifacts found in Jordan may be evidence of archaic humans leaving Africa 400,000 years earlier than previously thought

Legacies of the genome

Magazine followed the evolution of sequencing projects that improved disease diagnosis and led to the development of innovative treatments

How do rivers and floodplains influence species formation in Amazonia?

Throughout millenia, water bodies and landscape changes favor plant and animal diversification in the region

Travel lessons

Travel itineraries combine science learning with exploring new horizons, allowing visitors to act as research assistants on scientific studies

Tuatara fossil discovered in Rio Grande do Sul

The oldest specimen of a sphenodon in the southern hemisphere has been found in the municipality of Candelária, in the Brazilian state of Rio Grande do Sul

3.8-million-year-old skull

A nearly complete hominid skull dated at 3.8 million years old has led to new conclusions about the origins of the genus

Homo sapiens in the Peloponnese

A 210,000-year-old skull fragment found in southern Greece may be the oldest evidence of the presence of modern humans outside Africa

A 42-million-year-old whale with legs

Its limbs were well adapted to swimming and were not suited to moving across land

The origin of perching birds

A group representing more than 60% of bird species originated in Australia 47 million years ago, study finds

The origin of the butterfly

Studies based on gene and fossil analysis estimate that butterflies emerged between 120 and 100 million years ago

The other evolutionist

Alfred Wallace, a lesser-known contributor to the theory of evolution, explored the Amazon between 1848 and 1852, where he collected specimens, wrote, and sketched

Monogamy linked to interaction between 24 genes

Researchers found similar gene activity in the monogamous species of different animals

Tracking the ancestry of corn

DNA reveals a complex domestication history largely set in Mexico and the Amazon

Dinosaurs probably originated in Southern Brazil

Paleontologists talk about characteristics and origins of dinos | 10'59"

New origins

Brazilian versions of the Charles Darwin classic puts into context the development of evolution theory

Misleading similarities between species

Animals and plants that share a great likeness do not always have similar evolutionary histories

Science pioneer

Warwick Kerr trained teams and directed research institutions, and was always attentive to the use of scientific knowledge

Male or female?

The mystery unfolds Amazonian frog species has more sex chromosomes than any other vertebrate

Primate culture

Transmission of tool-use practices among capuchin monkeys helps redefine the role of traditions in evolution