
Womb pollution slows babies' speech, hits preemies hardest
A London cohort of 498 infants shows that first-trimester exposure to nitrogen dioxide and fine/ultrafine particulates is linked to slower language development at 18 months (language scores 5–7 points lower) and greater motor delays (about 11 points) in very preterm babies, underscoring environmental justice concerns and the need for pollution reduction.
