On this day: July 30

Survivors of USS Indianapolis endured days adrift and shark attacks

After the cruiser USS Indianapolis sank on July 30, 1945, hundreds of sailors spent up to five days in the open sea; those who remained alive faced dehydration, exposure, and documented shark attacks before rescue reduced the toll.

Weightlifter Collapses After Bar Crushing Chest at 1972 Olympic Trials

At the July 30, 1972 Olympic trials, a competitor collapsed when a loaded barbell dropped onto his chest during a lift attempt, prompting immediate medical response and raising questions about athlete safety and equipment protocols.

2003 European Heat Wave Linked to Thousands of Deaths

In late July 2003 an unprecedented heat wave swept much of western and central Europe, leading to thousands of excess deaths, overwhelmed health systems, and a sharp policy reckoning over heat preparedness and vulnerable populations.

British troops deployed to Northern Ireland as sectarian unrest escalates

On 30 July 1969 British troops were sent to Northern Ireland amid escalating clashes between Catholic and Protestant communities and heavy rioting in Belfast and Derry. The deployment aimed to restore order after police struggled to contain violence during rising communal tensions.

NASA Announces Evidence of Ancient Water Flow on Mars

NASA reported findings indicating that Mars once hosted flowing surface water and wetter conditions in its past, based on mineral and geological evidence collected by orbiters and rovers.