A 2.5-million-year-old fossil of a hominin species called Australopithecus africanus had been discovered in South Africa.

"These relics are effectively fossils of the planet formation process, holding vital clues to deciphering the history of our ...

Donaldjohanson formed about 150 million years ago when a much larger asteroid broke apart. Since then, its orbit and spin ...

New Southwest Research Institute-led modeling indicates the main belt asteroid (52246) Donaldjohanson may have formed about ...

Donaldjohanson, a main belt asteroid, could be a relic of a cosmic collision that took place 150 million years ago.

As noted by Dr. Johanson in the Aug. 23 article "He Loves Lucy," the decision about whether to travel the Lucy fossil is fully in the hands of the Ethiopian government. We are honored that the Houston ...

Previously, scientists thought the Homo genus didn't split off from the more primitive Australopithecus species - which the famous "Lucy" fossil belongs to - until about 2.3 million years ago.

afarensis (e.g. Lucy). However, “[t]he contemporaneity of the two species now suggests that a more complex family tree prevailed early in the human evolutionary process,” the study authors write.

Just as the Lucy fossil provided unique insights into the origin of humanity, the Lucy mission promises to revolutionize our knowledge of the origin of humanity's home world. Donaldjohanson is the ...