What causes infertility, and how can assisted reproductive technologies help? Follow the journeys of people navigating fertility challenges from structural inequalities and racism to falling sperm counts, egg freezing, and IVF.
More than 12 million Americans have sent their DNA to be analyzed by companies like 23andMe and AncestryDNA, but what actually happens once the sample is in the hands of testing companies? What are they looking at and how accurate are they?
As global temperatures rise, scientists are exploring geoengineering solutions, from planting trees to sucking carbon out of the air to physically blocking out sunlight. But would it work? And what are the risks of engineering Earth's climate?