Scientists with the complicated task of tracking secret nuclear weapons developments around the world are getting some help from a new and more-advanced artificial intelligence system. Nuclear explosions, even underground ones on the other side of the world, leave signature traces of radioactive gasses. This system helps sort through masses of data to find which radioactive traces are relevant and which are naturally occurring, which are new and which are left-overs. Faith Lapidus reports.
Electric vehicles are on the verge of a major growth spurt, according to many experts. Around the world, concerns about pollution and climate change are growing, and EVs provide an attractive alternative to fossil fuel-powered vehicles. But high sticker prices remain a challenge. VOA's Steve Baragona has more on an industry on the rise.
Extreme weather events are on the rise and climate change is playing a role in both the frequency and intensity of the bad weather the world is seeing. And as we enter 2019, weird weather seems to be the norm in many parts of the world. VOA's Kevin Enochs reports.
2018 was a busy year for space travel and exploration. NASA landed a research craft on Mars and China launched for the dark side of the moon. The International Space Station (ISS) celebrated its 20th birthday, SpaceX broke its own record for number of launches, and scientists even found water on a distant asteroid. Arash Arabasadi hurls us through the cosmos for VOA’s look back at the year in space.
Nigeria's campaign to vaccinate more people against yellow fever appears to be making headway. The government is partnering with the World Health Organization (WHO), Gavi, the Vaccine Alliance and UNICEF to immunize more than 26 million people. It is the second phase of Nigeria's preventive campaign after a yellow fever outbreak in September 2017. Timothy Obiezu has more from Abuja.