Nature News
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![[:es]NASA’s Mars rover makes ‘fantastic’ find in search for past life[:]](https://katedra.eus/app/uploads/2022/06/png-3-14.png)
[:es]NASA’s Mars rover makes ‘fantastic’ find in search for past life[:]
Perseverance has collected four rock samples from an ancient river delta where organisms might have thrived.
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![[:es]Why are people grieving for a queen they never met?[:]](https://katedra.eus/app/uploads/2021/07/png-1-9.png)
[:es]Why are people grieving for a queen they never met?[:]
Most of the people mourning the death of Queen Elizabeth II were not close to her — research can shed light on the nature of their grief.
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![[:es]How nasal-spray vaccines could change the pandemic[:]](https://katedra.eus/app/uploads/2020/04/PNG-2-4.png)
[:es]How nasal-spray vaccines could change the pandemic[:]
Vaccines inhaled through the mouth or nose might stop the coronavirus in its tracks, although there’s little evidence from human trials so far.
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![[:es]How nasal-spray vaccines could change the pandemic[:]](https://katedra.eus/app/uploads/2020/04/PNG-2-4.png)
[:es]How nasal-spray vaccines could change the pandemic[:]
Vaccines inhaled through the mouth or nose might stop the coronavirus in its tracks, although there’s little evidence from human trials so far.
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![[:es]How nasal-spray vaccines could change the pandemic[:]](https://katedra.eus/app/uploads/2020/04/PNG-2-4.png)
[:es]How nasal-spray vaccines could change the pandemic[:]
Vaccines inhaled through the mouth or nose might stop the coronavirus in its tracks, although there’s little evidence from human trials so far.
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[:es]Almost half of cancer deaths are preventable[:]
Data show that smoking, drinking alcohol and obesity are the biggest contributors to cancer worldwide.
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[:es]Almost half of cancer deaths are preventable[:]
Data show that smoking, drinking alcohol and obesity are the biggest contributors to cancer worldwide.

![[:es]The controversial embryo tests that promise a better baby[:]](https://katedra.eus/app/uploads/2022/06/png-1-16.png)