| | | Governor Brown passed ground-breaking climate policies and hit some major pitfalls during his tenure. | | |
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| | | Minutes into 2019, New Horizons made a historic fly-by of the most distant object visited, Ultima Thule. | | |
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| | | From an ambitious clean-energy goal to officially recognizing a third gender, California continued to break new legislative ground last year. | | |
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| | | From Mercury to Mars and beyond - way beyond - 2018 rocked our world in terms of exploring the solar system. And more tantalizing missions are scheduled in the coming years, as well. | | |
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| | | Research suggests the winter blues are triggered by specialized light-sensing cells in the retina that communicate directly with brain areas involved in mood. | | |
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| | | Butterfly counts typically fluctuate from year to year, but this year's dramatic drop is breathtaking. | | |
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