Nova on PBS

The 1918 flu killed at least 50 million people, more than died from battle in World War I.

Nutrient-rich dust from the Saharan Desert blows across the ocean to the Amazon.

After a massive extinction, diverse marsupials came to dominate this isolated continent.

Now in its 40th season, NOVA is the most-watched primetime science series on American television, reaching an average of five million viewers weekly.

What is the chance a new flu strain will jump from birds to people?

NOVA explores headline-grabbing innovations and discoveries from our past, present and future.

NOVA explores headline-grabbing innovations and discoveries from our past, present and future.

NOVA explores headline-grabbing innovations and discoveries from our past, present and future.

Now in its 39th season, NOVA is the most-watched primetime science series on American television, reaching an average of five million viewers weekly.

Now in its 39th season, NOVA is the most-watched primetime science series on American television, reaching an average of five million viewers weekly.

Gross Science: How bed bugs reproduce is the stuff of nightmares.

Now in its 39th season, NOVA is the most-watched primetime science series on American television, reaching an average of five million viewers weekly.

Now in its 39th season, NOVA is the most-watched primetime science series on American television, reaching an average of five million viewers weekly.

NOVA explores headline-grabbing innovations and discoveries from our past, present and future.

An ancient Greek computer could predict eclipses with impressive accuracy.