“What we found is that there has pretty much been a doubling of mold counts in 10 years and there’s been a huge increase in cedar elm tree pollen,” Sur said, adding that the increased ...

Tree pollen season is about to get real, as Friday's count surpassed 2,000 for the first time all year, according to the Houston Health Department.

Nearly 30 years after it withstood the blast of a 4,000-pound bomb, the Oklahoma City National Memorial and Museum's Survivor Tree continues to spread its message of hope, strength, and renewal.

For decades, the American elm population has dwindled, and one of its greatest threats is the deadly Dutch elm disease, which has taken its toll on Brown’s campus, too. The tree removal ...