We track four people on their journey.
Why Iraqi refugees abandon Europe and return home
We follow the journey of a plastic bottle to find out what it takes to truly recycle the product creating zero waste.
Science & Technology, US & Canada, Environment
We take the pulse of Costa Rica's rainforest to find out how global warming affects the 'lungs of the planet'.
Science & Technology, Environment, Costa Rica
We head to the rural American city of Chattanooga to learn how citizens secured the fastest Internet in the country.
Science & Technology, Politics, Arts & Culture
We investigate how illegal gold mining in Peru is turning pristine Amazonian rainforests into toxic wastelands.
Science & Technology, Peru, Environment
We travel to the Peruvian rainforest to find out what's being done to protect one of the region's most iconic creatures.
Science & Technology, Peru, Wildlife
Scientists are studying the world's deadliest viruses to find treatments and vaccines for new infectious diseases.
Science & Technology, Health, Ebola
We meet the scientists trying to uncover ocean mysteries and look at the promise and perils of seabed mining.
As the number of severe weather events increases across the globe, we examine the science behind climate change.
Environment, US, Weather
As new technologies keep us connected, we look at the deadly phenomenon of distracted driving.
Science & Technology, US & Canada, United States
We go to Texas to explore the relationship between fracking and earthquakes.
Science & Technology, United States, Fracking
We visit indoor farms using artificial light to boost produce and an airport using its open space to build bee colonies.
Science & Technology, Food, Agriculture
We visit the only wildlife CSI forensics lab in the world as it helps to prosecute traders of illegal rhino horn.
Environment, Arts & Culture, Science & Technology
American Football is a billion-dollar industry, so can making stadiums greener encourage sports fans to do the same?
Science & Technology, Environment, US
We explore driverless cars, hydrogen fuel cell vehicles, and vehicle-to-vehicle communication technology.
Science & Technology, Business & Economy, Environment
We explore the science of electrical brain stimulation, the DIY devices behind it, and what the experts have to say.
Health, Science & Technology, Arts & Culture
We follow scientists developing new techniques to predict wildfire behaviour and help save the lives of firefighters.
Scientists are using stem cells harvested from umbilical cord blood to treat diseases and reverse brain damage.
Science & Technology, Health, US & Canada
An innovative surgical procedure to help the blind, a look at shark conservation efforts, and saving America's oranges.
TechKnow visits the Bahamas to explore what can be done to help conserve and protect tiger sharks.
Science & Technology, Environment, Bahamas
TechKnow visits the California Institute of Technology to explore how innovation can be inspired by nature.
Science & Technology, Energy, Climate Change
TechKnow explores early earthquake detection systems and a new, 'safer' gun with user-recognition technology.
Science & Technology, Natural disasters, Earthquake
Al Jazeera World follows the everyday lives of Aleppo residents living amid the ongoing conflict and destruction.
A look at the ancient roots of food and the unrest simmering over rising cost of staples before Egypt's 2011 uprising.
We investigate the sinister and mysterious murders of some of Uganda's leading Muslim clerics.
We travel to Chile to meet a group of young scientists determined to develop smart plant-based food to save the planet.
Science & Technology, Chile, Food
A couple working to protect LA communities from gang violence is caught in the crossfire of the US war on gangs.
Politics, Gang violence, US
South Koreans drink twice as much liquor as Russians, but is this national obsession with alcohol reversible?
Health, Asia, South Korea