How does a frog heal wounded skin without scarring?

When a Xenopus frog is deeply wounded, its skin can regenerate without scarring. Researchers have found that cells under the skin contribute to this regeneration after an excision injury.

How exploring Mars could help us fight climate change on Earth

The surface of Mars is a cold desert. Scars in the landscape point to a history of flowing rivers, standing lakes and possibly even planetary oceans. Yet the current Martian atmosphere has a density that's around 0.6% of ...

Failed candy recipe solves sticky problem in the lab

Anyone who has made Jello knows how difficult it can be to spring the wobbly treat from its mold intact. Now, imagine trying to dislodge something 10 times softer than gelatin, while keeping every detail unscathed down to ...

Designing better medical implants

Biomedical devices that can be implanted in the body for drug delivery, tissue engineering, or sensing can help improve treatment for many diseases. However, such devices are often susceptible to attack by the immune system, ...

Real and false-color images of Siberia

The Aqua satellite's MODIS (Moderate Resolution Imaging Spectroradiometer) instrument took this image of the fires in Siberia. The top image shows the full sized false color image of the area highlighting the burn scars from ...

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