At <a href="https://en.wikipedia.org/wiki/Malden_Island" id="mwAQY" rel="mw:WikiLink" title="Malden Island">Malden Island</a> in the Pacific Ocean, Britain tests its first <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Hydrogen_bomb" id="mwAQc" rel="mw:WikiLink" title="Hydrogen bomb">hydrogen bomb</a> in <a href="https://en.wikipedia.org/wiki/Operation_Grapple#Grapple" id="mwAQg" rel="mw:WikiLink" title="Operation Grapple">Operation Grapple</a>.