LifeOrcas are spreading further into the Arctic Ocean as sea ice melts Orcas – also known as killer whales – used to be unusual visitors to the Arctic Ocean off Alaska, but they are becoming more common there, which might be bad news for local ecosystems News
HealthTwo people suppressed HIV for years while pausing medication A growing number of cases show that some people with HIV can avoid becoming ill even while pausing their medication, as virus levels in their blood remain low News