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What is a scientific hypothesis?
A scientific hypothesis is a tentative, testable explanation for a phenomenon in the natural world.
164 million-year-old plant fossil is the oldest example...
Researchers in China have uncovered the oldest example of a fossilized flower bud ever.
Curiosity rover finds 'tantalizing' signs of ancient Mars...
NASA's Curiosity rover has found some interesting organic compounds that may be signs of ancient Mars life, but much more work is...
Will the Doomsday Clock move forward or back? Watch live...
The Doomsday Clock debuted 75 years ago to highlight the threat of nuclear weapons to our survival as a species, a risk now accompanied...
Ancient Chinese tombs hold remains of warriors possibly...
The 3,000-year-old tombs of a wealthy clan, including warriors and warhorses that may have been sacrificed, have been unearthed in...
Top 10 most famous ghosts
Ghosts are some of the most common figures of horror and morality tales in our history, but which ones stand out as the most significant?
Ash from Tonga volcano eruption reaches record altitude...
The volcanic eruption that destroyed a Polynesian island on Saturday injected ash into record altitude but won't cause any disruption...
Signs of labor: 6 clues baby is coming soon
Every labor story is different, but there are definitely signs that can let you know if you are in the early stages of labor.
