自六月起，香港出現了一場前所未見的社會運動，從反對《逃犯條例》修訂出發，在沒有中心組織作領導的狀態下，運動的形態和行動模式不停流變。我們可以如何理解這場運動所展現的生命力？參與者強調「不割席，不分化」，但實際上如何能夠做到保持團結？抗爭行動越見激烈的同時，示威者在意識形態上又有甚麼演變？這場運動舉世矚目，它對社會運動研究可以有甚麼啟示？三個月過去了，我們也許可以為這場運動做一個小結。

作為地球在宇宙中的鄰居，火星自古以來已吸引人類的注意。在科幻小說和電影裏更有人類登陸火星探索，甚至是移居火星的情節。近年來大型望遠鏡的觀察，以及過去50多年多個火星探測器的發現，讓火星成為地球之外我們最深入認識的行星。另外隨著太空科技和火箭的發展，載人的火星之旅看來不再是遙不可及。火星會否成為人類在太陽系裏的另一個家？

Migration is said to be the number one political issue in Europe. It is a divisive issue between EU member states and for the citizens at large. The 2018 United Nations Pact for Safe, Orderly and Regular Migration has unexpectedly triggered a new round of protests and discontents within Europe, albeit the need for a global effort to improving cooperation on international migration is larger than ever. Anti-EU populism across the continent looks set to take advantage of the upcoming European Parliament elections to expand its power in the policy-making process not only on migration but also the future direction of European integration. Arguably, the migrant crisis in Europe has threatened the post-war liberal order with a geopolitics of emotions.