Search Results for: Phylogenetics
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Animals
These huntsman spiders do something weird: live together as a big, happy family
Five unusual species of spider moms let youngsters live at home way past the cute waddling baby phase.
By Susan Milius -
Paleontology
This ancient dinosaur was no bigger than a hummingbird
The skull of one of these Mesozoic Era birds — the tiniest yet known — was discovered encased in a chunk of amber originally found in Myanmar.
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Ecosystems
Why some insect eggs are spherical while others look like hot dogs
Analyzing a new database of insect eggs’ sizes and shapes suggests that where eggs are laid helps explain some of their diversity of forms.
By Yao-Hua Law -
Paleontology
New fossils are redefining what makes a dinosaur
While some researchers question what characteristics define the dinosaurs, others are uprooting the dino family tree altogether.
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Paleontology
Readers debate dinosaur designation and more
Readers had questions about the dino family tree and Venus' habitability.
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Life
Defining ‘species’ is a fuzzy art
Here's why scientists still don't agree on what a species is.
By Susan Milius -
Genetics
HIV came to NYC at least a decade before virus ID’d
DNA analysis of early viral strains tracks U.S. debut to early ’70s
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Animals
Bacteria make male lacewings disappear
Scientists have tracked down why some green lacewings in Japan produce only female offspring: Bacteria kill off all the males early in life.
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Animals
Cuckoos may have a long-lasting impact on other birds
Some birds that don’t have to worry about parasites like cuckoos reject eggs that aren’t their own. It might be a legacy of long-ago parasitism.
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Animals
Sing a song of bird phylogeny
A new study challenges assumptions about birdsong, finding that the majority of songbird species have female singers.
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Anthropology
Little Red Riding Hood gets an evolutionary makeover
A statistical analysis attempts to track the rise of several widespread folktales.
By Bruce Bower