For decades, archaeologists have been uncovering rare and mysterious incised obsidian arrowheads across Neolithic Central Anatolia, each one bearing a unique design etched into its glassy black surface nearly 9,000 years ago.
Jennifer Bhatnagar spent the summer of 2023 traversing barren hillsides blackened by wildfire in northern California. She walked through devastated properties, examined the hot soil beneath her feet, collected samples and asked questions.
The "very important little penguin" is the first of its kind to hatch in the UK in more than a decade.
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New research suggests that if dark matter is composed of "dark photons," it would not have heated the early cosmos like scientists thought.