Officials hope the long-awaited exchange may help improve relations between the neighbours.

The abandoned Chernobyl exclusion zone could be about to change for the first time since the world's worst nuclear disaster.

Not long after midnight on April 26, 1986, the world’s worst nuclear power accident began. Workers were conducting a test at the Chernobyl Nuclear Power Plant in the Ukraine when their operations spun out of control. Unthinkably, the core of the plant’s reactor No. 4 exploded, first blowing off its giant concrete lid, then letting a massive stream of radiation into the air.

The new Ukrainian government is faced with reopening an inquiry into evidence of an organized mass killing in Kiev that Poroshenko stonewalled. Ivan Katchanovski investigates.

Astronaut Tim Kopra is currently orbiting Earth as part of the Expedition 36 and 37 missions, and snapped this fantastic image of Ukraine’s Dnieper River as he passed overhead last night.

Rare and endangered animals have thrived in the Chernobyl disaster zone since it was evacuated in 1986, as a new wildlife tour in southern Belarus shows

In April 1986, Reactor 4 of the Wladimir Iljitsch Lenin Atomic Power Station near the city of Chernobyl experiences a catastrophic core meltdown. The radioactive lava that formed was named Corium and it's still there.

The death of a student doctor from a preventable disease shows how Ukraine has become the measles capital of Europe.

Trees and other kinds of vegetation have proven to be remarkably resilient to the intense radiation around the nuclear disaster zone.

Covered up by a secretive Soviet Union at the time, the true number of deaths and illnesses caused by the nuclear accident are only now becoming clear.

The first product ever made there in 33 years.

U.S. national-security adviser John Bolton is seeking to scuttle the pending Chinese purchase of a Ukrainian aerospace company on grounds that it will give Beijing vital defense technology, according to senior U.S. administration officials familiar with the matter.

After seizing control of a large section of Independence Square, authorities began an attempt to retake City Hall, setting off fierce clashes with protesters.

“Dear subscriber, you are registered as a participant in a mass disturbance.” That's a text message that thousands of Ukrainian protesters spontaneously received on their cell phones today, as a new law prohibiting public demonstrations went into effect. It was the regime's police force, sending protesters the perfectly dystopian text message to accompany the newly minted, perfectly dystopian legislation.

Ukraine descended further into chaos as violent clashes between police and protesters left two dead and injured hundreds, in a situation the Ukraine Prime Minister said is "spiralling out of control". Escalating unrest resulted in the first two fatalities today, after the Ukraine's General Prosecutor confirmed two men had died of gunshot wounds and a criminal investigation has been opened in a statement.

Ukrainian opposition leaders held fresh talks with President Viktor Yanukovich on Saturday after overnight clashes between radical protesters and police, and an attempt by other activists to occupy the main energy ministry building.

A 27-year-old police officer has been shot dead in Kiev according to the Interior Ministry.

Ukraine's President Viktor Yanukovych has offered the post of prime minister to opposition leader Arseniy Yatsenyuk. He also offered former boxer Vitali Klitschko the position of deputy PM. In response, the opposition leaders did not explicitly say whether they accepted the offer, but repeated their demands for new presidential elections.

I found it hilarious, although its probably not as simple as this.

What I saw during the Orange Revolution that may spell doom for the Protesters