Researchers have found a chemical from a tropical mint plant that works both as a sunless tanner and as a solar shield in fair-skinned mice.

研究人员从热带一种薄荷类植物中发现的化学物质对缺乏阳光照射的皮革以及实验室隔绝阳光的“白皮”鼠都有作用。

youdao

The absence of an oxygen atmosphere on Mars and other planets in our solar system means that these planets also lack an ozone shield that would protect surface-dwelling life from UV radiation.

在火星和我们太阳系的其他行星上没有氧气，这意味着这些行星也缺乏保护地表生物免受紫外线辐射的臭氧层。

youdao

When a CME hits, the solar particles can interact with Earth's magnetic field to produce powerful electromagnetic fluctuations. (Related: "Magnetic-Shield Cracks Found; Big solar Storms Expected.")

当一批日冕物质抛射来临，太阳粒子可与地球的磁场相互作用形成强有力的电磁波动。

youdao

As early as 1989, for instance, in an article entitled "Space-based Solar Shield to Offset Greenhouse Effect, " James T.

CNN: The shield of Ra: Could solar reflection save the planet?

The Sun's magnetic field and solar wind - mainly in the form of electrons and protons coming out of the Sun - protects the entire Solar System by acting as a sort of shield from cosmic rays (very energetic particles and radiation from outer space).

BBC: Viewpoint: The Sun and climate change

Top of the list is a solar shade, a gigantic umbrella in space that would shield the Earth from the sun's rays.

ECONOMIST: Geo-engineering