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Learn why babies vomit after formula, how to tell spit-up vs vomiting, safe home fixes, red flags, and when to call the pediatrician.

Learn how pulse oximeters measure blood oxygen, what numbers mean, what affects accuracy, and when to seek medical help.

Learn common Xofigo (radium-223) side effectslow blood counts, nausea, diarrhea, swelling, fracture riskand practical ways to manage them.

Go inside NASA’s DART missionhow it hit Dimorphos, changed its orbit by 32 minutes, and proved asteroid deflection can work.

Explore 10 lesser-known 20th-century disasters, from deadly smog and dam failures to strange industrial tragedies and hidden hazards.