When we write things down, it's important to keep things nice and clear, so it's easy to read. Sentences help us give an order, ask a question, state a fact, or express an emotion or idea. Words are ...

Linking words together in the right way makes your writing easy to understand and interesting to read. When you are writing, words are grouped together into sentences. There are a few simple rules you ...

From cancer to Alzheimer’s: could a renewed focus on energy transform biomedicine? Including energy dynamics in research could improve our understanding of diseases and of the healing processes that ...

The company is seeking F.C.C. approval to test an idea to reflect sunlight to Earth at night, possibly powering solar panels. Critics say it could be bad for people and wildlife. By Kenneth Chang and ...