New words from Nat Geo

melee

a chaotic fight or general confusion

gorge

greedily eat large amounts of food

mitigate

make something less harsh or harmful

audacious

showing a willingness to be bold or take risks

regolith

a layer of rock, dust, and soil that covers the bedrock of a celestial body

vanguard

the leading group in an advancing movement or field

gurney

a specialized wheeled cot or stretcher

arid

(of an environment) extremely dry and can’t support most plant life