FROM Michael Hecht
Clumpy Soil on Mars, What's a Lander to Do? Two weeks ago, the world marveled when the Phoenix survived a 420 million-mile space journey and landed on Mars, right where it was supposed to. Now it's expected to analyze Martian soil to determine whether there might have been life on that planet. The lander has a robotic arm that has scooped up Martian soil for analysis by instruments, including a miniature oven. But the dirt sample has turned out to be clumpier than the oven's filter could handle. Michael Hecht heads one of the Jet Propulsion Laboratory's two soil analysis team.
Border security and campaign promises President Trump has promised tightened borders and a big beautiful wall. Guest host Barbara Bogaev looks at two tent-poles of the President's immigration policy: extreme vetting of visa applicants and building the US-Mexico border wall.
Is Venezuela becoming a dictatorship? Venezuela may have the world's largest oil reserves, but it's a nation in trouble… economically and politically. Is a populist promise to rescue democracy turning out to be a prelude to dictatorship?
Trump's ethical conflicts pile up as transparency diminishes President Trump's refusal to reveal his income tax returns is just one example of a lack of transparency that could be hiding conflicts of interest. Other conflicts are already obvious from his appointments. And he's being sued for using his job to increase his profits.