Tests show big drop in toxicity of red sludge reaching Danube in Hungary; Death toll up to 7

Toxicity of Hungary’s red sludge flow drops

Hungarian Science Academy says heavy metal content of sludge well below danger levels

Scientists say heavy metal in sludge not dangerous

Hungary says toxic red sludge has reached the Danube but no immediate damage seen yet

Hungary: Toxic red sludge has reached the Danube

Italian search for American balloonists missing over Adriatic expanded on second day

Search for missing US balloon pilots intensifies

Heavy snow halts planes in Europe, strands hundreds in freezing conditions on German highway

Heavy snow halts planes, trains and cars in Europe