Abstract: Nonlinear Negative Imaginary (NI) systems arise in various engineering applications, such as controlling flexible structures and air vehicles. However, unlike linear NI systems, their theory ...

DraftKings (DKNG) shares have tanked recently, on concerns that prediction markets are a competitive threat to sportsbooks. Cathie Wood's Ark Invest ETFs have taken advantage of the recent weakness, ...

The giant Australian cuttlefish annually return to the waters of the Upper Spencer Gulf, near Whyalla, in their tens of thousands for its breeding season. But this year, barely any have arrived.