Pedestrians in Tokyo pass a television screen broadcasting a report on May 4, 2019 that North Korea has fired several unidentified short-range projectiles into the sea off its eastern coast.
AP Photo/Koji Sasahara
North Korea is a major military threat to the US and its Asian allies, but exactly how powerful are its nuclear weapons? An earth scientist explains why it's hard to answer this question.
A 2015 tour of an entryway into the proposed Yucca Mountain nuclear waste repository.
AP Photo/John Locher
If recent history repeats itself, the proposed repository for extremely dangerous nuclear waste will stay dead.
Earthquakes can shape political decisions so understanding them is crucial.
Nuclear bomb tests potentially mark the start of a new geological epoch: the Anthropocene.
A detection station for seismic activity at Bilibion, a remote corner of Russia.
The Official CTBTO Photostream (Copyright CTBTO Preparatory Commission)
Human-induced earthquakes have been reported from every continent except Antarctica. We asked a geologist to investigate whether North Korea's nuclear tests could trigger geological changes.
Given what we know about radiation fallout, the parallels between Melbourne and Fukushima should not be ignored
North Korean soldiers participate in a target-striking contest in August this year.
North Korea's legitimacy derives almost wholly from its subjects’ perception of perfect strength and resolve. This makes it harder for Pyongyang to back down.
Chinese leader Xi Jinping speaks at the BRICS summit in Xiamen.
China is probably no more fond of the North Korean regime than the Americans are, but it is walking a fine line between managing both nations and ensuring its own continued rise.
Boeing WC-135 Constant Phoenix “sniffer plane” used to monitor radioactive emissions from nuclear bomb tests.
US Air Force/Staff Sgt. Christopher Boitz
Want to know if a rogue state has performed a nuclear test? Sniffer planes can help.
Back with a bang.
Pyongyang's latest test isn't the great leap forward it purports to be.
People watch news of missile test on a public TV screen in North Korea.
AP Photo/Jon Chol Jin
North and South Korea explained in four questions and answers.
North Korean leader Kim Jung-un inspects an outpost and Jangjedo defending force.
REUTERS/North Korea's Korean Central News Agency (KCNA)
A scholar who has profiled the likes of Saddam Hussein and Vladimir Putin says there is a method to understanding the madness.
North Korean cyberattacks may increase as the country comes under greater international pressure.
BeeBright via shutterstock.com
The international community – and the U.S. and China in particular – should give serious thought to what might be North Korea's cyberattack equivalent of a nuclear weapons test.
Testing times for Kim Jong-Un.
The country plays by different rules.
The Doomsday Clock has been advanced to two and a half minutes to midnight. But what does that mean?
EPA/Jim Lo Scalzo
It's two and a half minutes to midnight according to the Doomsday Clock. But what is the clock and why should we pay attention?
‘A-Day’ marked the first of 23 atomic bomb explosions at Bikini.
Department of Energy
In the summer of 1946, the U.S. government detonated the first of many atomic bomb tests in the Marshall Islands. Seventy years of radiation exposure later, residents are still fighting for justice.
If this detonation was a hydrogen bomb test, then it was likely less successful than the North Korean leadership may have hoped.
North Korea remains committed to perfecting a deployable nuclear weapon capability. It is confident in the understanding that there appears little the international community can do to prevent it.
A nuclear test explosion from April 1954.
A number of states have given up on pursuing nuclear disarmament through the Non-Proliferation Treaty. Instead they are moving to create a new legal mechanism for banning nuclear weapons
Indian Prime Minister Narendra Modi has been feted during his visit, but there are no guarantees that his new uranium deal with Australia won’t worsen nuclear security.
AAP Image/Tracey Nearmy
Behind the flag-waving and cheers surrounding Indian Prime Minister Narendra Modi’s recent visit to Australia are serious questions about the safety and security implications of Australia’s agreement to…
Roasted by a pulse.
Predicting or worrying about disasters is a popular pastime. But we tend to take notice when somebody with money at stake becomes concerned. Financial people likely sat up when Paul Singer, manager of…