Earlier in the spring, at a local plant sale, I succumbed to another “let’s take a chance” pick — the marigold variety “Lemon Gem,” with small, single flowers amid lacy foliage. This plant, which ...

While humans had long survived in savanna and forests, they shifted into everything from from dense rainforests to arid deserts in the period leading up to 50,000 years ago, developing what Hallett ...