Stories by Stephanie Pappas

As air pressure in New Jersey dramatically fell last October, more photographs were taken. And when air pressure in the state rose again, fewer photos were taken

A series of tracks in Oklahoma reveal where a dinosaur most likely slipped and caught itself before continuing on

Prolonged warm and dry conditions have provided extra fuel for four large fires and 53 smaller ones currently burning in New South Wales

Major or clinical depression seems to alter the genes that regulate sleep and waking

Dinosaurs — or at least their ancestors — may have gotten an earlier start than once believed

People who anticipate discrimination do their best to represent their group well

The West, Texas, fertilizer plant explosion on April 17 echoes an April 16, 1947, event when a ship loaded with ammonium nitrate, also a chemical fertilizer, docked at the Port of Texas City erupted in flames and exploded, killing nearly 600 people

Microbiome changes might explain how circumcision reduces HIV risk, possibly by eliminating bacteria that activate immune cells in the skin that themselves present the retrovirus to the immune system, making infection more likely

The cancer, which has wiped out 70 percent of devils, doesn't alert the animals' immune systems to its presence. On the up side, these genetic instructions are reversible

Doctors in medieval Europe weren't as idle as it may seem, as a new analysis of the oldest-known preserved human dissection in Europe reveals

What swinging couples and committed polyamorists can teach monogamists about love

DNA analysis confirms that bones excavated from underneath a parking lot in Leicester, England, are the remains of the vilified English king, Richard III

Ancient Pompeii’s political elite vied for advertising space on the “private walls” of wealthy citizens

Exercise is good for you, whereas high heels are not, and calling an ambulance saves lives

Pachyderms moved away from human populations often wander back, ransacking houses and killing villagers

Carvings etched on rocks near the Nile River depict the ceremonial processions of a pharaoh—the oldest known illustrations of the kind

Great apes who display the sense of curiosity and playfulness generally associated with extroverts generally outlive their shyer counterparts

While most of its relatives perished with the dinosaurs, the molelike creature lived 45 million years longer than expected

Selfish behavior proves to be good for the group when it comes to staying warm

The risk of destroying a career is nothing compared with the evolutionary drive to reproduce

A year-long trial about downplayed risks from a 2009 quake came to a close with the verdict, which alarmed Earth scientists worldwide

Other studies have found that different groups of chimps use tools differently, but new findings reveal the first example of different social interactions between groups

Evolution might underlie the different processing of female versus male bodies. Both genders do it

A new computer simulation support a long-held theory that social interactions may have triggered brain evolution in human ancestors