More than 1.4 million school-aged children have a speech or language impairment.

In school-aged children, speech or language problems can lead to isolation from classmates and poor school performance.

A speech-language pathologist can evaluate a child and provide therapy and support to enhance communication ability.

Autism affects about one in every 150 children in the U.S.

If one child has autism, parents have a 2 to 8 percent chance of having another child with the disorder.

By age two, some children with autism have larger brains than their peers without autism.

Using brain MRIs from young siblings of autistic children, researchers hope to find clues or markers of autism development.

English contains more words than any other language on the planet and will add its millionth word early Wednesday, according to the Global Language Monitor, a Web site that uses a math formula to estimate how often words are created.